Prepare yourself for the upcoming WBCS Prelims exam

✅ Correct Answer: C. rewound

📚 Explanation: The verb 'rewind' is an irregular verb in the English language. The correct past tense and past participle form for this word is 'rewound'.

It describes the specific action of winding a film or tape back toward the beginning. Forms like 'rewinded' or 'rewounded' do not exist in standard English grammar.

✅ Correct Answer: D. alighted

📚 Explanation: The word 'alighted' is a formal term used to describe the action of getting off a bus, train, or other vehicle. It indicates that the person has stepped down to the ground.

While 'stepped' is a general movement, 'alighted' is the precise verb used for departing from public transport. This makes the sentence flow naturally in a descriptive context.

✅ Correct Answer: C. fear of confined spaces

📚 Explanation: 'Claustrophobia' refers to an extreme or irrational fear of being in small or enclosed places. People with this condition often feel anxious in elevators or small rooms.

The word comes from the Latin 'claudere' meaning to close and the Greek 'phobos' meaning fear. It is a very common psychological term used to describe spatial anxiety.

✅ Correct Answer: D. Incapable

📚 Explanation: The prefix 'in-' is added to the word 'capable' to create its direct opposite. 'Incapable' describes a person or thing that does not have the ability to do something.

Other prefixes like 'un-' or 'non-' are not used with this specific root word. Following the correct prefix rules ensures that the negative meaning is expressed accurately.

✅ Correct Answer: C. with

📚 Explanation: The verb 'offended' is followed by the preposition 'with' when the anger or displeasure is directed at a person. It shows the relationship between the person who is angry and the target.

If the anger was about an action, the preposition 'at' would be used. In this sentence, since it refers to 'me', 'with' is the only correct choice for the person-to-person interaction.

✅ Correct Answer: C. Narcissism

📚 Explanation: 'Narcissism' is the term used to describe an excessive interest in or admiration of oneself and one's physical appearance. It is often linked to extreme selfishness and a need for attention.

The word originates from the Greek myth of Narcissus, who fell in love with his own reflection. It is distinct from hedonism, which focuses on the pursuit of pleasure.

✅ Correct Answer: B. Calmness

📚 Explanation: 'Serenity' refers to the state of being calm, peaceful, and untroubled. It describes a quiet and relaxed atmosphere that makes a person feel at ease.

Therefore, 'Calmness' is the most suitable synonym among the choices. While isolation or seclusion refers to being alone, serenity focuses on the feeling of peace in the environment.

✅ Correct Answer: A. get by

📚 Explanation: The idiom 'make both ends meet' means to have just enough money to pay for the things that you need to live. It refers to managing one's expenses within a limited income.

The phrasal verb 'get by' shares this meaning, as it describes the act of surviving or managing with difficulty. It is a common way to talk about financial struggles in daily life.

✅ Correct Answer: A. self-important

📚 Explanation: The word 'officious' is used to describe someone who is intrusive or meddlesome in an annoying way. Such a person often offers help or advice that is not wanted or needed.

It carries a negative meaning of being 'self-important' and bossy. It should not be confused with 'official', which relates to formal duties or authority.

✅ Correct Answer: B. was

📚 Explanation: When a singular subject is connected to another noun by phrases like 'with' or 'as well as', the verb must agree with the first subject. Here, the main subject is 'The ship', which is singular.

Therefore, the singular verb 'was' is required to complete the sentence correctly. The presence of 'its crew' does not change the grammatical number of the primary subject.

✅ Correct Answer: D. When will you meet me?

📚 Explanation: To turn the statement into a specific question about the time, the interrogative word 'When' is used. The subject 'I' changes to 'you' to reflect the person being asked.

This transformation asks for the information provided in the original future-tense statement. It follows the standard question structure where the auxiliary verb 'will' comes before the subject.

✅ Correct Answer: D. by

📚 Explanation: In English, the preposition 'by' is used to indicate the degree or amount of a difference when comparing two things. It shows the specific measurement by which one thing exceeds another.

In this sentence, it specifies that the height difference is exactly two inches. Using other prepositions like 'with' or 'in' would be incorrect for expressing such a measurement.

✅ Correct Answer: A. change

📚 Explanation: 'Vicissitude' refers to a change of circumstances or fortune, typically one that is unwelcome or unpleasant. it describes the natural ups and downs that occur during a long period.

Therefore, 'change' is the direct synonym for this word. It highlights the shifting nature of life and events over time.

✅ Correct Answer: A. rarely

📚 Explanation: The idiom 'once in a blue moon' is used to describe an event that happens very 'rarely' or almost never. It refers to something that is not part of a normal or frequent routine.

The phrase comes from the rare occurrence of a second full moon in a single calendar month. It is a popular way to emphasize that a situation is highly unusual.

✅ Correct Answer: A. Normal

📚 Explanation: The word 'weird' describes something that is strange, unusual, or bizarre. To find the opposite, we look for a word that represents what is expected and ordinary.

'Normal' is the perfect antonym as it refers to something that is standard and common. This contrast highlights the difference between the unusual and the regular.

✅ Correct Answer: B. Accommodation

📚 Explanation: The correct spelling of this word is 'Accommodation', which features a double 'c' and a double 'm'. It is one of the most frequently misspelled words in the English language.

It refers to a place to live, work, or stay in. Remembering the double letters for both consonants is the key to writing it accurately.

✅ Correct Answer: B. A one-eyed person was seen roaming about the streets.

📚 Explanation: Although the word 'one' starts with a vowel 'o', it produces a consonant 'w' sound. In English, we use the article 'a' before words that start with a consonant sound.

This rule applies regardless of the actual first letter of the word. Therefore, 'a one-eyed person' is the grammatically correct phrase for this sentence.

✅ Correct Answer: A. Deep

📚 Explanation: 'Superficial' describes something that is only on the surface and lacks depth or seriousness. it refers to things that are not thorough or profound.

The antonym 'Deep' represents something that goes far below the surface or shows great intensity. This contrast describes the difference between shallow and meaningful qualities.

✅ Correct Answer: A. was sitting

📚 Explanation: The past continuous tense 'was sitting' is used to describe an ongoing action that was happening when another sudden event occurred. The sitting was a background state interrupted by the ball.

This structure correctly links a long action with a short, finished action in the past. It provides a clear timeline for the two events mentioned in the sentence.

✅ Correct Answer: D. Apiary

📚 Explanation: An 'apiary' is a specific place where beehives are kept, especially for the purpose of producing honey. The word comes from the Latin 'apis' which means bee.

It is distinct from an 'aviary', which is a large cage or enclosure for keeping birds. Knowing these specific terms for animal enclosures is part of a strong vocabulary.

✅ Correct Answer: D. sanctimonious

📚 Explanation: The expression 'holier than thou' is used to describe a person who acts as if they are morally superior to others. It carries a negative meaning of being self-righteous.

The word 'sanctimonious' is a direct synonym for this attitude. it describes someone who makes a show of being morally better than everyone else.

✅ Correct Answer: A. over

📚 Explanation: The verb 'presided' is traditionally followed by the preposition 'over' when referring to a person leading a meeting or a formal gathering. It shows authority and management of the event.

To 'preside over' something is the standard idiomatic way to describe the role of a chairperson. This pairing is essential for formal and professional English writing.

✅ Correct Answer: C. a

📚 Explanation: We use the article 'a' before the word 'unique' because it begins with a consonant 'y' sound. Even though 'u' is a vowel letter, the sound determines the choice of the article.

This is the same rule that applies to words like 'university' or 'union'. Choosing 'a' ensures the sentence follows the phonological rules of the language.

✅ Correct Answer: D. haughty

📚 Explanation: 'Supercilious' is an adjective used to describe someone who behaves as if they are superior to others. It refers to an arrogant and disdainful attitude.

The word 'haughty' is a perfect synonym as it also describes a person who is proud and looks down on others. Both words are often used to describe social arrogance.

✅ Correct Answer: C. feel unwell

📚 Explanation: To feel 'under the weather' is a common idiom that means to feel slightly sick or exhausted. It usually refers to minor health issues like a cold, headache, or general tiredness.

The person does not feel their normal, healthy self but is not in a critical condition. it is a widely used informal expression in everyday conversation.

✅ Correct Answer: B. Rs. 1,00,000

📚 Explanation: Under the Gatidhara Scheme of the West Bengal government, eligible beneficiaries receive a financial subsidy to purchase commercial vehicles. The maximum amount of this subsidy is exactly 1,00,000 rupees.

The scheme aims to generate self-employment for the youth in the transport sector. It is a major welfare initiative provided through the Employment Bank of the state.

✅ Correct Answer: A. A rank or office

📚 Explanation: In the Mughal administration, the term 'Mansab' refers to a specific rank or position held by a government official. It determined the official's status, salary, and military responsibilities.

The system was introduced by Emperor Akbar to organize the nobility and the army. It was a unique way of managing the huge bureaucracy of the Mughal Empire.

✅ Correct Answer: D. 1857

📚 Explanation: The University of Calcutta was established on January 24, 1857. it was founded based on the recommendations of Wood's Despatch and was the first modern multidisciplinary university in South Asia.

The year 1857 is historic in India for both the foundation of major universities and the Great Revolt. The university played a vital role in the intellectual development of the country.

✅ Correct Answer: D. Krishnadeva Raya

📚 Explanation: 'Amuktamalyada' is a famous epic poem written in Telugu by the Vijayanagara Emperor Krishnadevaraya. It narrates the life story of the South Indian Alwar saint Andal.

Krishnadevaraya was a great patron of literature and a scholar himself, famously known as 'Andhra Bhoja'. His reign is considered the Golden Age of Telugu culture.

✅ Correct Answer: A. Vicoji Rustam Kama

📚 Explanation: Madam Bhikaiji Cama (Vicoji Rustam Kama) is credited with designing and unfurling an early version of the Indian National Flag in 1907. She hoisted it at the International Socialist Conference in Stuttgart, Germany.

The flag featured green, yellow, and red stripes with eight lotuses and the words 'Vande Mataram'. She is a legendary figure known as the 'Mother of the Indian Revolution'.

✅ Correct Answer: B. 1993

📚 Explanation: The Protection of Human Rights Act was enacted by the Indian Parliament in 1993. This law led to the establishment of the National Human Rights Commission (NHRC) and State Commissions.

It was a major step in institutionalizing the defense of civil liberties and human rights in India. The act provides a legal framework for investigating violations and promoting awareness.

✅ Correct Answer: C. 65 years

📚 Explanation: According to the Constitution of India, a judge of the Supreme Court holds office until they reach the age of 65 years. In contrast, the retirement age for High Court judges is 62 years.

This age limit ensures that the highest judiciary remains experienced. A judge can also resign earlier or be removed through a formal process of impeachment.

✅ Correct Answer: D. Akbar

📚 Explanation: The 'Ain-i-Dahsala' or the ten-year settlement system was introduced by the Mughal Emperor Akbar in 1580. it was a refined land revenue system designed by his finance minister, Raja Todar Mal.

The system calculated taxes based on the average produce and prices of the last ten years. it brought stability to the state's income and fairness to the farmers.

✅ Correct Answer: C. Right to Life and Personal Liberty

📚 Explanation: Article 21 is one of the most important fundamental rights, stating that no person shall be deprived of their life or personal liberty except according to procedure established by law. The Supreme Court has expanded its meaning to include the right to privacy and health.

It protects individuals from arbitrary actions by the state. This article is considered the heart of the fundamental rights in the Indian Constitution.

✅ Correct Answer: A. a sermon read in the name of the ruler at Friday prayers.

📚 Explanation: In Islamic tradition, 'Khutba' refers to the formal public preaching or sermon delivered during Friday prayers and on special occasions. During the medieval period, it was a symbol of political sovereignty.

Mentioning the ruler's name in the Khutba was a sign that they were the legitimate authority of the land. it was a key way for Sultans and Emperors to declare their power.

✅ Correct Answer: B. Falta

📚 Explanation: The Export Processing Zone (EPZ) in West Bengal is located at Falta, in the South 24 Parganas district. it was established to promote export-oriented industries by providing special facilities and tax benefits.

Falta serves as a major hub for international trade due to its proximity to the Hooghly river. The zone helps in generating employment and boosting the state's manufacturing sector.

✅ Correct Answer: C. longitudinal and transverse

📚 Explanation: A motorboat moving on water creates two types of waves. The disturbances moving through the air and within the water are longitudinal, while the ripples on the surface are transverse waves.

This happens because the boat interacts with both the surface and the body of the liquid. It is a common example used in physics to show different wave behaviors in a single event.

✅ Correct Answer: B. Puducherry

📚 Explanation: According to the 2011 Census, the Union Territory of Puducherry recorded the highest sex ratio in India among all UTs, with 1037 females per 1000 males. it was the only UT with more women than men.

In contrast, Daman and Diu had the lowest ratio. Monitoring these figures is essential for understanding social development and gender balance across different regions.

✅ Correct Answer: A. Bankura

📚 Explanation: Bankura is one of the primary districts in West Bengal known for the production of mica, specifically in the Chhandar and neighboring areas. The state has significant deposits of this mineral in its western plateau region.

Mica is a vital resource used in the electrical and electronics industries for its insulating properties. Identifying mineral-rich zones is an important part of the state's economic geography.

✅ Correct Answer: A. Arunachalam Muruganantham

📚 Explanation: The 2018 film 'Padman' was based on the life of Arunachalam Muruganantham, a social activist from Tamil Nadu. He invented a low-cost sanitary pad-making machine to improve menstrual hygiene in rural India.

His story is one of innovation and dedication to solving a major public health issue. The movie helped in spreading awareness about a subject that was traditionally considered a taboo.

✅ Correct Answer: D. None of the above

📚 Explanation: The National Register of Citizens (NRC) is a record or register of all legal citizens of India. it is currently an administrative document rather than a simple draft, bill, or legislative act.

The purpose of the NRC is to identify and document genuine Indian citizens. it gained significant national attention during its update process in the state of Assam.

✅ Correct Answer: C. Reserve Bank of India

📚 Explanation: The Reserve Bank of India (RBI) has the sole authority to issue and print currency notes in India, except for the 1 rupee note. This is done through its specialized printing presses located in various cities.

The RBI manages the supply and circulation of money to maintain economic stability. The 1 rupee note is unique as it is issued by the Ministry of Finance.

✅ Correct Answer: D. President

📚 Explanation: According to Article 263 of the Constitution, the Inter-State Council is established by the President of India. it serves as a forum to discuss and investigate subjects of common interest between the Center and the States.

The goal of the council is to promote better coordination and cooperative federalism in the country. The Prime Minister acts as the Chairman, but the power to form it lies with the President.

✅ Correct Answer: A. Aung San Suu Kyi

📚 Explanation: 'Letters from Burma' is a collection of essays written by the Nobel Peace Prize winner Aung San Suu Kyi. In these writings, she describes the daily life, culture, and political struggles of the people of Myanmar.

The book provides a deep insight into the country's beauty and its difficult path toward democracy. it was written during the period of her house arrest by the military government.

✅ Correct Answer: C. Andhra coast

📚 Explanation: Hudhud was a very severe cyclonic storm that caused massive damage to the coastal regions of Andhra Pradesh in October 2014. The city of Visakhapatnam was hit particularly hard by the storm.

It was one of the most powerful cyclones to strike the east coast in recent years. The event led to a huge disaster relief and reconstruction effort by the state and central governments.

✅ Correct Answer: C. 61st

📚 Explanation: The 61st Constitutional Amendment Act, passed in 1988, reduced the voting age in India from 21 years to 18 years. This change came into effect in early 1989 for the general elections.

The reform aimed to involve the younger generation in the democratic process of the country. It was a major milestone in expanding the political participation of Indian citizens.

✅ Correct Answer: C. TCS

📚 Explanation: Tata Consultancy Services (TCS) is the largest Information Technology company in India by market capitalization and revenue. it is a global leader in IT services, consulting, and business solutions.

The company is part of the Tata Group and employs hundreds of thousands of professionals worldwide. it has been a key driver of India's reputation as a global technology hub.

✅ Correct Answer: D. Rohit Sharma

📚 Explanation: Rohit Sharma was one of the recipients of the Rajiv Gandhi Khel Ratna award in 2020, which is India's highest sporting honor. He was recognized for his exceptional performance in international cricket.

He became only the fourth cricketer to receive this prestigious award. The honor highlights his role as one of the most successful and consistent batsmen in the world.

✅ Correct Answer: C. Alauddin Khilji

📚 Explanation: Most rulers of the Slave Dynasty, like Aibak, Iltutmish, and Balban, were originally slaves before becoming Sultans. Alauddin Khilji, however, belonged to the Khilji dynasty and was the nephew and son-in-law of the previous Sultan.

He came to power through a family line and military strength rather than a slave background. His reign is famous for his market reforms and massive military conquests.

✅ Correct Answer: C. Democratic Party

📚 Explanation: Joe Biden, the 46th President of the United States, is a member of the Democratic Party. He took office in January 2021 after winning the election alongside Kamala Harris.

The Democratic Party is one of the two major political parties in the USA, generally supporting more social welfare programs. Biden previously served as the Vice President under Barack Obama.

✅ Correct Answer: B. Tribal Movement

📚 Explanation: The Chipko movement was a non-violent social and ecological movement started in the 1970s by village people, primarily women and tribal communities. it aimed to protect trees from being cut down by loggers in the Himalayan region.

The term 'Chipko' means to hug, as the protesters hugged trees to prevent them from being felled. Although it was an environmental movement, it is often categorized by its strong grassroots and tribal leadership.

✅ Correct Answer: B. Teesta

📚 Explanation: The Punarbhava and Atrai rivers are major distributaries of the Teesta river system in the northern part of West Bengal. They flow through the Dinajpur region before entering Bangladesh.

These rivers are vital for the irrigation and agriculture of North Bengal. The Teesta itself is the most important river in the region, known for its rapid flow and changing course.

✅ Correct Answer: B. increase by about 11%

📚 Explanation: The power of a heater is inversely proportional to its resistance (P = V squared divided by R), and resistance is directly proportional to length. If length is reduced by 10%, the resistance also decreases.

This decrease in resistance leads to an increase in power. Using the formula, a 10% reduction in length results in an increase in power of approximately 11 percent.

✅ Correct Answer: D. Chambal Valley

📚 Explanation: Badland topography is a unique landscape characterized by deep ravines, gullies, and sharp ridges. it is a prominent feature of the Chambal Valley, caused by intense soil erosion by the river.

The area is often called the 'Chambal Ravines' and is unsuitable for agriculture. This geographical phenomenon is a major study area for soil conservation and land management in India.

✅ Correct Answer: A. 1 : 12

📚 Explanation: The minute hand of a clock completes one full circle (360 degrees) in 60 minutes, while the hour hand takes 12 hours (720 minutes) to do the same. This means the minute hand moves 12 times faster.

Therefore, the ratio of the velocity of the hour hand to the minute hand is 1 to 12. This constant ratio is the basis for how all analog clocks are designed to tell time accurately.

✅ Correct Answer: B. Dadabhai Naoroji

📚 Explanation: Dadabhai Naoroji, known as the 'Grand Old Man of India', authored this book to highlight the economic exploitation of India by the British. He proposed the 'Drain of Wealth' theory in this work.

He argued that Britain was systematically draining India's resources to England, leading to mass poverty. This research was a major catalyst for the early Indian nationalist movement.

✅ Correct Answer: B. Syed Mir Nasar Ali

📚 Explanation: Titumir was a famous revolutionary who led a peasant uprising against the British and local zamindars in Bengal. His original name was Syed Mir Nasar Ali.

He is best remembered for building a 'Bamboo Fortress' (Bansher Kella) in Narkelberia to resist the British forces. He was a brave leader of the Wahabi movement in the early 19th century.

✅ Correct Answer: D. A decree to prevent nationalist protests amongst students in educational institutions during the Partition of Bengal.

📚 Explanation: The Carlyle Circular was issued by the British government in October 1905 during the anti-partition agitation. it threatened to withdraw grants and recognition from schools whose students joined political protests.

This was an attempt to suppress the youth participation in the Swadeshi movement. In response, Indian leaders established national schools to provide education outside of British control.

✅ Correct Answer: D. 2019

📚 Explanation: The Sundarban wetland in India was officially designated as a 'Ramsar Site' in February 2019. This international recognition highlights its global importance as a unique mangrove ecosystem.

While it was already a National Park and World Heritage site, the Ramsar status provides better protection for its water resources. it is now the largest Ramsar site in India.

✅ Correct Answer: A. Fazlul Haque

📚 Explanation: A.K. Fazlul Huq was a prominent lawyer and politician who served as the first Prime Minister of Bengal. He was affectionately given the title 'Sher-i-Bangal' (Tiger of Bengal) for his powerful oratory and leadership.

He was a champion for the rights of tenant farmers and was instrumental in passing the Bengal Tenancy Act. He founded the Krishak Praja Party to represent the rural masses.

✅ Correct Answer: C. Santhal rebellion

📚 Explanation: Sidho and Kanho Murmu were the primary leaders of the Santhal Rebellion (1855-56) in eastern India. They led thousands of Santhals against the oppressive British revenue system and local moneylenders.

They aimed to establish an independent Santhal state. Although the revolt was brutally suppressed, it led to the creation of the Santhal Parganas as a separate administrative district.

✅ Correct Answer: C. Bahadur Shah II

📚 Explanation: Bahadur Shah Zafar (Bahadur Shah II) was the last Mughal emperor and was in power when the 1857 Uprising began. The rebel soldiers proclaimed him as the Emperor of Hindustan and the leader of the revolt.

After the British suppressed the uprising, he was arrested and exiled to Rangoon, where he died. His removal marked the formal end of the Mughal Empire in India.

✅ Correct Answer: C. The members of the both Houses of Parliament through the method of proportional representation by single transferable vote.

📚 Explanation: The Public Accounts Committee (PAC) consists of 22 members, with 15 from the Lok Sabha and 7 from the Rajya Sabha. These members are elected annually by the respective houses of Parliament.

They are chosen using the system of proportional representation to ensure diverse political views. The committee's main role is to audit the government's expenditure and check for financial errors.

✅ Correct Answer: A. January 1, 2015

📚 Explanation: NITI Aayog (National Institution for Transforming India) was established on January 1, 2015, through a resolution of the Union Cabinet. It replaced the 65-year-old Planning Commission.

The aim of the Aayog is to promote cooperative federalism and provide a 'bottom-up' approach to planning. it serves as the premier policy think tank of the Indian government.

✅ Correct Answer: C. Greenhouse

📚 Explanation: A solar cooker uses a glass cover to trap the heat from sunlight inside an insulated box. This process is identical to the 'Greenhouse' effect, where solar radiation enters but heat is blocked from escaping.

This results in a significant temperature rise inside the cooker, which is enough to cook food. it is a sustainable and eco-friendly way of utilizing solar energy for daily needs.

✅ Correct Answer: D. Kangsabati

📚 Explanation: The Mukutmanipur Dam (one of the largest earthen dams in India) is constructed across the Kangsabati river in the Bankura district of West Bengal. it was built for irrigation and flood control in the region.

The reservoir created by the dam is a popular tourist spot known for its natural beauty. The river is a vital source of water for the dry plateau areas of the state.

✅ Correct Answer: A. the Godavari

📚 Explanation: The Godavari is the longest river in Southern India and the second-longest river in the entire country after the Ganga. Due to its size and spiritual importance, it is often called 'Dakshina Ganga'.

It originates in Maharashtra and flows across the breadth of the peninsula into the Bay of Bengal. The river is a lifeline for millions of people for irrigation and drinking water.

✅ Correct Answer: D. The Vijayanagara Empire

📚 Explanation: The 'Nayankara' system was a unique administrative and military feature of the Vijayanagara Empire. Under this system, the King granted lands called 'Amaram' to military chiefs known as Nayakas.

In return, the Nayakas were required to maintain a specific number of troops and provide revenue to the state. This system helped in managing the vast territories of the empire.

✅ Correct Answer: D. Palas

📚 Explanation: Sandhyakar Nandi was a famous poet in the court of the Pala kings of Bengal during the 11th-12th centuries. He is best known for his work 'Ramacharitam', a unique Sanskrit poem.

The poem uses double meanings to describe both the life of Lord Rama and the history of King Ramapala. it is an important source for understanding the later history of the Pala dynasty.

✅ Correct Answer: B. the Mars

📚 Explanation: NASA successfully landed the 'Perseverance' rover on the surface of Mars in February 2021. The mission's goal is to search for signs of ancient microbial life and collect rock samples.

The rover is equipped with advanced instruments and a small helicopter named Ingenuity. it is one of the most ambitious robotic missions ever sent to the red planet.

✅ Correct Answer: D. Novak Djokovic

📚 Explanation: The Serbian tennis star Novak Djokovic won the French Open men's singles title in 2021 by defeating Stefanos Tsitsipas in the final. This victory was his 19th Grand Slam title at that time.

He became the first player in the Open Era to win all four Grand Slam tournaments at least twice. This win further established his dominance in world tennis.

✅ Correct Answer: C. Wealth Tax

📚 Explanation: A direct tax is one that is paid directly by an individual or organization to the government. 'Wealth Tax' is a classic example, as it is levied on the total value of assets owned by a person.

Other taxes like GST or Excise Duty are indirect because they are collected through businesses and passed on to the consumer. Although Wealth Tax was abolished in 2015, it remains the standard textbook answer for this category.

✅ Correct Answer: B. Bharati

📚 Explanation: 'Bharati' is India's third Antarctic research station, which was established and commissioned in March 2012. it is located in the Larsemann Hills region of the icy continent.

The station is designed to conduct research in oceanography and atmospheric sciences. it is a state-of-the-art facility that allows Indian scientists to work year-round in extreme conditions.

✅ Correct Answer: B. Ranajit Guha

📚 Explanation: The 'Subaltern Studies' group of historians was spearheaded by Ranajit Guha in the early 1980s. This school of thought focuses on the history of the marginalized and common people rather than just elite leaders.

Guha and his colleagues aimed to give a voice to those who were traditionally ignored by colonial and nationalist history. This approach has had a massive influence on modern social science research.

✅ Correct Answer: D. Supreme Court

📚 Explanation: The Supreme Court of India is regarded as the 'Custodian' and 'Guardian' of the Constitution. its primary responsibility is to ensure that all laws and executive actions follow the constitutional framework.

The court has the power of 'Judicial Review' to strike down any law that violates the Constitution. This role ensures that the supreme law of the land is protected and upheld.

✅ Correct Answer: D. National Mission for Clean Ganga

📚 Explanation: The 'Namami Gange' Programme was launched by the Union Government in June 2014 as an integrated conservation mission. its goals are the effective abatement of pollution and the rejuvenation of the river Ganga.

The program involves cleaning the riverfront, building treatment plants, and protecting the river's biodiversity. it is a major national effort to restore the health of India's most sacred river.

✅ Correct Answer: B. 50 cm, convex

📚 Explanation: The focal length (f) is calculated as 1 divided by the power (P). For a power of +2.0D, the focal length is 1/2 meters, which equals exactly 50 centimeters.

A positive power value indicates that the lens is 'convex' or converging in nature. These lenses are commonly used to correct long-sightedness (hypermetropia).

✅ Correct Answer: D. Rashbihari Bose

📚 Explanation: The 'Indian Independence League' was a political organization founded by the revolutionary Rash Behari Bose in 1942 in Japan. It aimed to organize Indians living outside India to struggle against British rule.

Rash Behari Bose later invited Subhas Chandra Bose to take over the leadership of the league and the INA. It played a critical role in mobilizing international support for India's freedom.

✅ Correct Answer: B. Brahmabandhab Upadhyay

📚 Explanation: Brahmabandhab Upadhyay was a prominent theologian and revolutionary who edited the nationalist Bengali daily newspaper 'Sandhya'. The paper was famous for its bold language and support for the Swadeshi movement.

He used the newspaper to urge the people to fight for complete independence from British rule. His courageous writing made him a target of the colonial government's sedition laws.

✅ Correct Answer: A. Sulphur

📚 Explanation: Onions contain sulfur-based compounds that are released when the cells of the onion are broken by chopping. These compounds react to form a gas that turns into a mild sulfuric acid upon touching the eyes.

This acid irritates the eye's surface, which triggers the production of tears to wash it away. Cooling the onion before cutting can help reduce the release of these gases.

✅ Correct Answer: D. Chhattisgarh

📚 Explanation: Chhattisgarh is the only state in India that currently produces tin on a commercial scale. The tin ore, known as cassiterite, is primarily found in the Dantewada and Bastar districts.

The state contributes 100% of the country's total tin output. Tin is a valuable metal used in soldering, plating, and the electronics industry.

✅ Correct Answer: C. decreases

📚 Explanation: When a person on a swing stands up, their center of gravity rises, which effectively shortens the length of the pendulum. According to physics, a shorter length leads to a faster oscillation.

Therefore, the 'time period' (the time taken for one full swing) decreases. This makes the person swing back and forth more quickly than when they were sitting.

✅ Correct Answer: A. V. D. Savarkar

📚 Explanation: While imprisoned in the Cellular Jail of the Andaman Islands, V.D. Savarkar submitted several 'mercy petitions' to the British government for his release. He argued that he was a victim of political persecution.

These petitions have been a subject of intense historical and political debate for decades. He was eventually released from jail in 1924 under certain restrictive conditions.

✅ Correct Answer: C. Bal Gangadhar Tilak

📚 Explanation: The slogan "Swaraj is my birthright, and I shall have it" was coined by Bal Gangadhar Tilak, popularly known as 'Lokmanya'. He gave this call during the early 20th century to inspire the masses.

Tilak was a leader of the extremist phase of the Congress and believed in complete self-rule. His powerful words became a rallying cry for the entire Indian independence movement.

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✅ Correct Answer: B. high k and low δ

📚 Explanation: Diamond is a unique material that has the highest 'thermal conductivity' (k) of any known solid, but it is an electrical insulator with very 'low electrical conductivity' (δ). This happens because its atoms are tightly bonded.

The high thermal conductivity is due to strong covalent bonds that allow heat to travel quickly as vibrations. However, there are no free electrons to carry electricity.

✅ Correct Answer: A. Nipah

📚 Explanation: In mid-2021, researchers from the ICMR discovered antibodies against the 'Nipah' virus in two species of bats in a cave in Mahabaleshwar, Maharashtra. This was the first time antibodies for this virus were found in the state.

The discovery highlights the importance of monitoring bat populations to prevent potential zoonotic outbreaks. Nipah is a dangerous virus that can spread from animals to humans.

✅ Correct Answer: B. Devprayag

📚 Explanation: The holy confluence of the Bhagirathi and Alakananda rivers is located at 'Devprayag' in the state of Uttarakhand. it is at this point that the combined river officially takes the name 'Ganga'.

Devprayag is the last of the 'Panch Prayag' (five confluences) of the Alakananda river. it is a major pilgrimage site and holds deep spiritual importance in Hinduism.

✅ Correct Answer: C. SOI

📚 Explanation: The 'Survey of India' (SOI) is the national engineering agency in charge of mapping and surveying the country. it is responsible for publishing the high-quality topographical maps of India.

The SOI was established in 1767 and is one of the oldest government departments. its maps are essential for defense, urban planning, and environmental research.

✅ Correct Answer: B. England won Super Over by boundaries.

📚 Explanation: The 2019 ICC Cricket World Cup final between England and New Zealand was tied even after a Super Over. According to the rules at that time, England was declared the winner because they had hit more boundaries during the match.

This controversial rule sparked a major debate across the cricketing world and was later changed by the ICC. England won their first-ever World Cup title through this tie-breaker.

✅ Correct Answer: B. 1911

📚 Explanation: The Partition of Bengal, originally implemented in 1905, was officially 'annulled' or cancelled in 1911 by Lord Hardinge. This was announced by King George V during the Delhi Durbar to pacify the intense nationalist protests.

At the same time, the capital of British India was shifted from Calcutta to Delhi. The annulment was a victory for the Swadeshi movement and the unity of Bengal.

✅ Correct Answer: B. Science and Technology

📚 Explanation: The Shanti Swarup Bhatnagar Prize is the most prestigious award in India for outstanding contributions to the field of 'Science and Technology'. it is awarded annually by the CSIR to young researchers.

The prize covers several disciplines, including physics, chemistry, biology, and engineering. it is named after the first director of the CSIR, Dr. Shanti Swarup Bhatnagar.

✅ Correct Answer: D. √6 times slower.

📚 Explanation: The time period of a pendulum is inversely proportional to the square root of the gravitational acceleration (g). Since gravity on the moon is about 1/6th of that on Earth, the time period increases.

An increase in the time period means each swing takes longer, so the clock runs 'slower' by a factor of the square root of 6. This is a standard physical result of changing gravitational environments.

✅ Correct Answer: D. Dadabhai Naoroji

📚 Explanation: Dadabhai Naoroji is affectionately known as the 'Grand Old Man of India' for his lifelong commitment to the Indian freedom struggle. He was a prominent leader and the first Indian to be elected to the British Parliament.

He was a founding member of the Indian National Congress and served as its President three times. His research on the economic exploitation of India made him a respected figure globally.

✅ Correct Answer: D. Pir Panjal - Zaskar - Ladakh - Karakoram

📚 Explanation: When moving from the southern plains toward the north, the correct order of the Himalayan ranges is: the Pir Panjal (Lesser Himalayas), followed by the Zaskar, Ladakh, and finally the Karakoram range.

This sequence covers the transition from the lower hills to the highest mountain systems of the Trans-Himalayas. Pir Panjal is the southernmost of these high-altitude ranges.

✅ Correct Answer: A. SARS-CoV-2

📚 Explanation: According to the World Health Organization (WHO), the official scientific name of the virus that causes the Covid-19 disease is 'SARS-CoV-2' (Severe Acute Respiratory Syndrome Coronavirus 2).

The name was chosen because the virus is genetically related to the coronavirus responsible for the SARS outbreak of 2003. 'Covid-19' is the name of the disease itself, not the virus.

✅ Correct Answer: A. 5 crores to 75 crores rupees

📚 Explanation: In mid-2020, the Indian government updated the definition of MSMEs (Micro, Small, and Medium Enterprises). For a 'small' enterprise, the annual turnover limit is now set between 5 crores and 50 crores rupees.

Based on the provided answer key, the range is listed up to 75 crores. These classifications help the government target specific financial support and benefits to different categories of businesses.

✅ Correct Answer: C. Jodhpur

📚 Explanation: The 'variability of rainfall' refers to how much the actual rainfall differs from the average amount each year. This variability is highest in arid and semi-arid regions where rainfall is already low and unpredictable.

'Jodhpur', being located in the Thar Desert region of Rajasthan, experiences the most pronounced variation in rainfall compared to humid cities like Kolkata or Ranchi. it is the most arid location in this list.

✅ Correct Answer: C. Civil Disobedience Movement

📚 Explanation: The historic Dandi March, led by Mahatma Gandhi in March-April 1930, served as the official launch of the nationwide 'Civil Disobedience Movement'. He walked to the coast to break the British salt laws.

This act of non-violent protest inspired millions across India to defy British taxes and regulations. It was the second major mass movement of the freedom struggle.

✅ Correct Answer: B. Sushil Chandra

📚 Explanation: Sushil Chandra assumed office as the 24th Chief Election Commissioner (CEC) of India in April 2021. He succeeded Sunil Arora in the post.

The CEC leads the Election Commission and is responsible for conducting free and fair elections across the country. Sushil Chandra has previously served in senior administrative roles in the Indian Revenue Service.

✅ Correct Answer: A. heavy body has greater momentum.

📚 Explanation: Momentum is calculated using the square root of (2 multiplied by Mass multiplied by Kinetic Energy). Since both bodies have equal kinetic energy, the one with the larger mass will have more momentum.

Therefore, the 'heavy body' will always possess a greater momentum than the light body in this situation. This is a fundamental concept in classical mechanics regarding energy and motion.

✅ Correct Answer: D. Turkey

📚 Explanation: The Khilafat movement was started in India (1919) to protest against the unjust treatment of 'Turkey' and the abolition of the Ottoman Caliphate after World War I. Muslims across the world considered the Sultan of Turkey as their spiritual leader.

The movement aimed to pressure the British government to preserve the authority of the Caliph. Gandhi supported this cause to foster Hindu-Muslim unity during the non-cooperation struggle.

✅ Correct Answer: D. Jiffy

📚 Explanation: Light year, Parsec, and Furlong are all units used to measure 'distance' in various contexts (astronomy and traditional land measurement). A 'Jiffy' is an informal term for an extremely short period of 'time'.

In physics, a jiffy is specifically the time it takes for light to travel one centimeter in a vacuum. Therefore, it is the only term in the list that refers to time rather than length.

✅ Correct Answer: A. Tamil Nadu

📚 Explanation: 'Tamil Nadu' has the largest installed capacity for wind power in India, with the Muppandal wind farm being one of the largest in the world. The state's geography allows it to harness strong seasonal winds.

It consistently leads the country in generating electricity from wind turbines. This success is part of Tamil Nadu's strong focus on renewable and sustainable energy sources.

✅ Correct Answer: B. Oman

📚 Explanation: The name for the severe cyclonic storm 'Yaas', which struck the east coast of India in May 2021, was given by 'Oman'. In the Persian language, the word 'Yaas' refers to the Jasmine flower.

Tropical cyclones in the north Indian Ocean are named by a panel of 13 countries in alphabetical order. This system helps in identifying and communicating about storms during disaster management.

✅ Correct Answer: D. Mukunda Das

📚 Explanation: Mukunda Das was a famous Bengali folk singer and poet who composed several patriotic songs during the anti-partition agitation in 1905. His song 'Ban esheche mora gange' was a powerful call for national awakening.

He used his traditional 'Jatra' performances to spread political awareness among the common people. He is celebrated as a major cultural figure of the Swadeshi movement.

✅ Correct Answer: D. Dampier and Hodges

📚 Explanation: The outer boundary of the Sundarban mangrove forest was first scientifically surveyed and 'demarcated' by two British officers, 'Dampier and Hodges', between 1829 and 1830.

This line, known as the 'Dampier-Hodges Line', defined the northern limit of the estuarine forests for administrative purposes. it remains a historical reference point for studying the changing geography of the delta.

✅ Correct Answer: B. Pather Dabi

📚 Explanation: 'Pather Dabi' (The Right of the Way) is a famous novel by Sarat Chandra Chattopadhyay that describes the secret activities of an Indian revolutionary group in Burma. The book was so influential that it was banned by the British government.

The story centers around the charismatic leader Sabyasachi and his struggle for freedom. it is considered one of the most powerful literary reflections of the revolutionary spirit of the time.

✅ Correct Answer: D. None of them

📚 Explanation: Due to the global Covid-19 pandemic, India did not have a 'Chief Guest' for the Republic Day parade in 2021. British Prime Minister Boris Johnson was originally invited but had to cancel his visit.

This was the first time in over fifty years that the parade was held without a foreign head of state as the chief guest. The event was conducted with strict health protocols and a smaller audience.

✅ Correct Answer: D. Tungabhadra

📚 Explanation: The Kurnool-Cuddapah (K-C) Canal is a major irrigation canal that draws its water from the 'Tungabhadra' river at Sunkesula barrage in Andhra Pradesh. it was constructed in the late 19th century to serve the drought-prone Rayalaseema region.

The canal provides water for hundreds of thousands of acres of agricultural land. it is a critical component of the water management system in Southern India.

✅ Correct Answer: C. 6V

📚 Explanation: In a battery of 10 cells, if 2 cells are connected the wrong way, they will cancel out the voltage of 2 'good' cells. Therefore, the net voltage will be reduced by the strength of 4 cells.

Calculation: 10V - (2 x 2V) = 6V. This results in the battery behaving as if it only has 6 effective cells. This is a common physics problem regarding series electrical connections.

✅ Correct Answer: C. 100%

📚 Explanation: The 'Swasthya Sathi' scheme is a flagship health insurance program of the West Bengal government. The state government bears '100%' of the insurance premium, making it completely free for the beneficiaries.

The scheme provides a health cover of up to 5 lakh rupees per family per year for secondary and tertiary care. it covers over 2 crore families across the state, ensuring universal health access.

✅ Correct Answer: C. Tiger

📚 Explanation: The flag of the Indian National Army (INA), led by Netaji Subhas Chandra Bose, featured a 'Springing Tiger' as its central symbol. The tiger represented the strength and fierce determination of the Indian soldiers to achieve freedom.

The flag used the colors of the tricolor: saffron, white, and green. This image became a powerful symbol of the armed struggle for independence against British rule.

✅ Correct Answer: C. dimensional change in material

📚 Explanation: A 'dilatometer' is a scientific instrument used to measure the 'dimensional change' or expansion of a material when it is subjected to changes in temperature or chemical processes. it is essential for studying the thermal properties of solids and liquids.

The device provides very precise data on how materials grow or shrink under different conditions. it is widely used in materials science and industrial quality control.

✅ Correct Answer: B. Irish

📚 Explanation: The revolutionary movement in Bengal was deeply inspired by the 'Irish' republican struggle against British rule. Indian leaders studied the methods of the Irish Republican Army (IRA) and organizations like Sinn Fein.

The 1916 Easter Rising in Ireland served as a major motivational event for Bengali youth. Surya Sen's Chittagong raid was particularly influenced by the Irish model of urban guerrilla warfare.

✅ Correct Answer: B. Speaker

📚 Explanation: According to Article 110 of the Indian Constitution, if any question arises whether a bill is a Money Bill or not, the decision of the 'Speaker' of the Lok Sabha is final. The Speaker's certificate is required before the bill is sent to the Rajya Sabha.

This authority ensures that the Lower House maintains its supreme power over financial matters. The President and the Rajya Sabha cannot challenge this determination.

✅ Correct Answer: D. Solid CO₂

📚 Explanation: 'Dry ice' is the common name for the solid form of 'carbon dioxide' (CO2). it is called dry ice because it does not melt into a liquid but turns directly into a gas at room temperature (sublimation).

It is extremely cold, with a surface temperature of about -78 degrees Celsius. it is widely used for keeping food frozen during transport and for creating fog effects in theater.

✅ Correct Answer: C. President

📚 Explanation: According to Article 324 of the Constitution, the Election Commission of India is constituted by the 'President of India'. The President appoints the Chief Election Commissioner and other Election Commissioners.

While the government provides suggestions, the official appointment power lies with the head of the state. This ensures that the commission is a constitutional body with high authority and independence.

✅ Correct Answer: A. O. Hume, about Indian National Congress

📚 Explanation: The 'safety valve theory' was first proposed to explain the founding of the Indian National Congress in 1885. It suggested that 'A.O. Hume' created the Congress to provide a safe platform for educated Indians to vent their anger against the British.

The idea was that this would prevent a violent explosion or another large revolt like 1857. While some early leaders believed this, many modern historians view the Congress as a genuine product of Indian nationalist growth.

✅ Correct Answer: B. A Peasant movement

📚 Explanation: The 'Eka Movement' (Unity Movement) was a powerful 'peasant movement' that broke out in 1921 in the northern districts of Uttar Pradesh. it was led by Madari Pasi against the high rents and oppression by landlords.

The peasants took a religious oath to remain united and pay only the legal rent. it was one of the many grassroots agrarian struggles that occurred alongside the non-cooperation movement.

✅ Correct Answer: A. Louise Glück

📚 Explanation: The American poet 'Louise Glück' was awarded the Nobel Prize in Literature in 2020. The Swedish Academy praised her for "her unmistakable poetic voice that with austere beauty makes individual existence universal."

She is one of the most celebrated contemporary poets in the United States. Her work often explores complex themes of childhood, family life, and emotional loss with great clarity and grace.

✅ Correct Answer: D. All of the above

📚 Explanation: The 'Kanyashree' scheme in West Bengal generally has a family income limit for eligibility. However, this ceiling is waived if the girl is 'physically challenged', has 'lost both parents', or is an 'inmate of a juvenile home' (JJ Home).

These exemptions ensure that the most vulnerable girls receive the benefits of the scheme without any financial hurdle. The scheme aims to prevent child marriage and promote higher education for girls.

✅ Correct Answer: B. Harisena

📚 Explanation: The Allahabad Pillar Inscription (Prayag Prashasti) was composed by 'Harisena', who was the court poet and a senior official of the Gupta Emperor Samudragupta. The text is written in classical Sanskrit.

It provides a detailed and chronological account of the military conquests and achievements of Samudragupta. it is considered one of the most important archaeological and literary sources for the Gupta era.

✅ Correct Answer: D. 23rd March 1940

📚 Explanation: The All India Muslim League formally passed the historic 'Pakistan Resolution' during its session in Lahore on 'March 23, 1940'. it demanded a separate sovereign state for Muslims in northwestern and eastern zones of India.

This resolution marked a definitive turn in Indian politics toward the eventual partition of the country. The day is celebrated annually in Pakistan as 'Pakistan Day'.

✅ Correct Answer: C. Abu Rihan Alberuni

📚 Explanation: The famous 11th-century Persian scholar 'Al-Beruni' was the first foreign traveler to refer to 'Khajuraho' in his writings. He described it as the capital of the kingdom of Jajahuti in Central India.

Al-Beruni visited India during the time of Mahmud of Ghazni and wrote extensively about Indian culture and geography. Khajuraho is world-famous today for its magnificent Chandela temples.

✅ Correct Answer: D. Both the Houses of Parliament along with the Members of the State Assemblies.

📚 Explanation: The 'President of India' is elected indirectly by an 'Electoral College'. This college consists of the 'elected members' of both Houses of Parliament (Lok Sabha and Rajya Sabha) and the 'elected members' of all State Legislative Assemblies.

Nominated members and members of Legislative Councils do not participate in this process. The election is held by secret ballot using the system of proportional representation.

✅ Correct Answer: A. Tolstoy

📚 Explanation: Mahatma Gandhi was deeply influenced by the writings of the Russian author 'Leo Tolstoy', especially his book The Kingdom of God is Within You. He even established a 'Tolstoy Farm' in South Africa for his followers.

He admired Tolstoy's philosophy of non-violence and the rejection of modern materialism. Their correspondence through letters played a vital role in shaping Gandhi's ideas of Satyagraha.

✅ Correct Answer: C. Diffraction

📚 Explanation: The beautiful rainbow-like colors seen on the surface of a Compact Disc (CD) are caused by the phenomenon of 'diffraction'. The disc has billions of microscopic pits that act like a diffraction grating.

When light hits these tiny ridges, it bends and splits into different wavelengths. This creates the colorful patterns that change as you tilt the disc under a light source.

✅ Correct Answer: B. Karnataka

📚 Explanation: The Sharavati Hydroelectric Project is located in the Shimoga district of 'Karnataka'. it is built on the Sharavati river, which is also famous for the Jog Falls, the second-highest plunge waterfall in India.

The project is one of the most important sources of hydroelectric power for the state of Karnataka. it features several major dams, including the Linganamakki Dam.

✅ Correct Answer: A. Assassination of British official W.C. Rand by Chapekar Brothers

📚 Explanation: The first political assassination of a British official after the 1857 revolt occurred in 1897. The Chapekar brothers (Damodar and Balkrishna) killed 'W.C. Rand', the Plague Commissioner of Pune.

They committed the act as a protest against the insensitive and oppressive measures used by the British during the plague epidemic in Pune. This event marked the beginning of militant nationalism in Maharashtra.

✅ Correct Answer: D. Classes IX to XII

📚 Explanation: 'Sabooj-Sathi' is a popular scheme of the West Bengal government that provides free bicycles to students in 'Classes IX to XII'. The bicycles are distributed to students of government and government-aided schools and madrasahs.

The scheme aims to improve student attendance, reduce dropouts, and empower students to reach their schools easily. it has become one of the largest bicycle distribution programs in the world.

✅ Correct Answer: B. Dingko Singh

📚 Explanation: 'Dingko Singh', the legendary Indian boxer and 1998 Asian Games gold medalist, passed away in June 2021 at the age of 42. He was a hero in his home state of Manipur and an inspiration for many Indian boxers.

He is remembered for his incredible performance in the bantamweight category and for being awarded the Padma Shri. His victory in the 1998 Asiad is considered a turning point for Indian boxing.

✅ Correct Answer: C. Tulsidas

📚 Explanation: 'Ramcharitmanas' is an epic poem in the Awadhi language written by the 16th-century Bhakti poet 'Tulsidas'. it retells the story of the Ramayana and is one of the most popular religious texts in North India.

Tulsidas made the divine story accessible to the common people by writing in the local dialect rather than Sanskrit. His work played a major role in the spread of Rama-centric devotion in the country.

✅ Correct Answer: A. Equality

📚 Explanation: Article 18 of the Indian Constitution provides for the 'Abolition of Titles' as part of the broader 'Right to Equality' (Articles 14-18). it prohibits the state from conferring any titles other than military or academic ones.

This article ensures that all citizens are treated as equals and that no one holds an inherited or social status above others. it is a vital provision for maintaining the democratic spirit of the nation.

✅ Correct Answer: C. a digital equivalent of pamphlets and fliers that helped mobilise protesters.

📚 Explanation: In the context of recent global and national protests, a 'toolkit' refers to a digital document or guide that contains information on how to organize and support a movement. it typically includes hashtags, sample posts, and lists of resources.

The term gained significant attention in India during the 2021 farmers' protests. it serves as a modern tool for coordinating collective action through social media platforms.

✅ Correct Answer: B. 6

📚 Explanation: During the period between 2011 and 2021, the West Bengal government significantly expanded its healthcare infrastructure by making 'six' new government medical colleges functional. These include colleges in Malda, Murshidabad, and other districts.

This expansion was aimed at increasing the number of MBBS seats and improving medical services in rural areas. Strengthening medical education is a key part of the state's public health policy.

✅ Correct Answer: C. insulator

📚 Explanation: At absolute zero temperature (0 K), 'pure silicon' behaves as a perfect 'insulator'. This is because all the valence electrons are tightly bound in their bonds, and there is no thermal energy to move them.

Silicon is a semiconductor, meaning its conductivity increases as temperature rises. At 0 K, however, there are no free charge carriers available to conduct electricity.

✅ Correct Answer: A. Cuttack

📚 Explanation: The Central Rice Research Institute (CRRI) is a premier national research center located in 'Cuttack', Odisha. it was established in 1946 to improve rice production and food security in India.

The institute conducts research on developing high-yielding and disease-resistant rice varieties. it played a crucial role in the success of the Green Revolution in the rice-growing regions.

✅ Correct Answer: A. Union of states

📚 Explanation: Article 1 of the Indian Constitution explicitly describes India as a 'Union of States'. This means that the Indian federation is not a voluntary agreement between states, and no state has the right to leave.

While it has federal features like a division of power, the central government has superior authority in many areas. This unique structure ensures the unity and integrity of the large and diverse nation.

✅ Correct Answer: C. Siachen

📚 Explanation: The 'Siachen Glacier', located in the Karakoram range of the Himalayas, is the largest glacier in India and one of the longest in the world outside the polar regions. it is about 76 km long.

The glacier is also famous for being the world's highest battlefield, where India and Pakistan have had military positions for decades. it is a critical source of fresh water for the Nubra and Indus rivers.

✅ Correct Answer: C. 1931

📚 Explanation: New Delhi was formally inaugurated as the new capital of India by the Viceroy Lord Irwin in '1931'. Although the decision to shift the capital from Calcutta was made in 1911, it took two decades to build the new city.

The city was designed by the famous architects Edwin Lutyens and Herbert Baker. its inauguration marked a new phase in British imperial architecture and administration in India.

✅ Correct Answer: C. 2k

📚 Explanation: The spring constant (k) is inversely proportional to the length of the spring. When a spring is cut into two equal halves, the length of each new spring becomes half of the original length.

Therefore, the spring constant of each half will double. Calculation: 1 divided by (1/2) equals 2. So, the new spring constant for each piece is exactly '2k'.

✅ Correct Answer: B. His charka (spinning wheel)

📚 Explanation: The 'Charkha' (spinning wheel) was the primary and most powerful symbol of Mahatma Gandhi's struggle for independence. it represented self-reliance, rural upliftment, and the non-violent boycott of foreign textiles.

Gandhi urged every Indian to spin their own yarn as a way to achieve economic freedom. The Charkha was even featured at the center of the early versions of the Indian national flag.

✅ Correct Answer: D. Sn and Pb

📚 Explanation: Solder is an alloy primarily composed of 'Tin' (Sn) and 'Lead' (Pb). it has a relatively low melting point, which makes it ideal for joining metal parts together in electrical and plumbing work.

The ratio of tin and lead can be adjusted to achieve different properties for specific jobs. In recent years, lead-free solders are becoming more common due to health and environmental concerns.

✅ Correct Answer: B. Pascal’s law

📚 Explanation: A hydraulic press works based on 'Pascal's Law', which states that pressure applied to an enclosed liquid is transmitted equally in all directions. By applying a small force on a small piston, a much larger force can be generated on a larger piston.

This principle is widely used in car brakes, hydraulic jacks, and heavy industrial machinery. it allows a person to lift or crush very heavy objects with very little physical effort.

✅ Correct Answer: C. William Jones

📚 Explanation: Sir William Jones founded the Asiatic Society in Calcutta on January 15, 1784. The goal of the society was to promote and facilitate research into the history, science, and languages of India and Asia.

William Jones was a brilliant scholar and linguist who wanted to bridge the gap between Eastern and Western knowledge. The society played a vital role in the 'Orientalist' rediscovery of India's ancient past.

✅ Correct Answer: C. Jindhagada

📚 Explanation: Jindhagada Peak, located in the Araku Valley of Andhra Pradesh, is the highest peak in the Eastern Ghats. it rises to an altitude of 1,690 meters.

While Mahendragiri was traditionally considered the highest, recent measurements have confirmed Jindhagada as the superior peak. it is surrounded by a diverse forest ecosystem and is a popular site for environmental study.

✅ Correct Answer: B. Dharmapala

📚 Explanation: The Vikramashila University (or Bihara) was founded by the Pala King 'Dharmapala' in the late 8th century AD in Bihar. it became one of the most important centers of Buddhist learning in ancient India, alongside Nalanda.

The university was particularly famous for its excellence in Vajrayana Buddhism. Dharmapala was a great patron of the faith and his efforts helped spread Buddhist culture across Asia.

✅ Correct Answer: A. Manpreet Singh

📚 Explanation: Manpreet Singh led the Indian Men's Hockey Team as its 'Captain' during the 2020 Tokyo Olympics (held in 2021). Under his leadership, the team won a historic bronze medal, India's first Olympic hockey medal in 41 years.

He is one of the most experienced midfielders in world hockey. His performance and leadership were instrumental in India's resurgence as a major power in the sport.

✅ Correct Answer: C. √3 : √2

📚 Explanation: In an ideal gas, the root mean square (rms) speed is calculated as the square root of (3RT divided by M), while the most probable speed is the square root of (2RT divided by M).

Dividing these two formulas leads to a simplified ratio of the square root of 3 to the square root of 2. This relationship helps scientists understand the distribution of velocities among gas molecules.

✅ Correct Answer: A. Karakoram

📚 Explanation: The Siachen Glacier is located in the eastern 'Karakoram' range of the Himalayas, near the Line of Control between India and Pakistan. it is the second-longest glacier in the world's non-polar regions.

This high-altitude zone is strategically important for both countries and is known for its extreme cold and difficult terrain. Siachen is often referred to as the 'Third Pole' due to its massive ice fields.

✅ Correct Answer: B. M. K. Gandhi

📚 Explanation: This famous quote is attributed to 'Mahatma Gandhi' as a way to illustrate his philosophy of non-violence (Ahimsa). He argued that meeting violence with more violence only leads to further suffering and destruction.

The phrase emphasizes that seeking revenge through harm will eventually destroy everyone involved. it was a central message during his leadership of the Indian freedom struggle.

✅ Correct Answer: D. Petroleum crudes

📚 Explanation: 'Petroleum crude' oil is the single largest item in India's current import list, accounting for a massive share of the total import bill. Since India imports about 80% of its crude oil needs, its economy is sensitive to global oil prices.

The crude is refined domestically into various fuels and products for use in transport and industry. Reducing this dependency through renewable energy is a major national policy goal.

✅ Correct Answer: B. Sankosh

📚 Explanation: The 'Sankosh' river flows through Bhutan and then enters India, where it forms the natural boundary between the states of West Bengal and Assam. it is a major tributary of the Brahmaputra river.

The river is important for the geography and ecology of the northern plains. it eventually joins the Brahmaputra in Bangladesh after crossing the Indian states.

✅ Correct Answer: C. Matangini Hazra

📚 Explanation: Matangini Hazra was a brave Gandhian freedom fighter who died during the Quit India movement in 1942. She led a non-violent protest in Tamluk and was shot while holding the national flag.

Unlike Veena Das or Kalpana Datta, who were part of militant revolutionary groups, Matangini followed the path of non-violence. She is affectionately known as 'Gandhi Buri' in West Bengal.

✅ Correct Answer: D. It will remain same.

📚 Explanation: When the passengers drink water from the tank, the total weight of the boat and the passengers remains the same. According to Archimedes' principle, the boat will continue to displace the same amount of water.

Therefore, the 'water level' of the tank will not change at all. This is a classic physics problem that tests the understanding of internal mass changes in a floating system.

✅ Correct Answer: D. continuous increase in price level.

📚 Explanation: 'Inflation' is defined as a general and 'continuous increase' in the prices of goods and services in an economy over time. it results in the decrease of the purchasing power of money.

While a one-time price rise is a shock, inflation refers to an ongoing trend of rising costs. Managing this rate is a primary goal of the Reserve Bank of India to maintain economic stability.

✅ Correct Answer: A. Zaskar and Pir Panjal

📚 Explanation: The beautiful Valley of Kashmir is geographically nestled between the 'Great Himalayan (Zaskar)' range to the north and the 'Pir Panjal' range to the south. it is a wide, flat basin in the middle of these high mountains.

The Jhelum river flows through the heart of the valley. This unique location gives Kashmir its temperate climate and spectacular natural landscapes that attract tourists from around the world.

✅ Correct Answer: D. Lord Irwin

📚 Explanation: 'Lord Irwin' was the Viceroy of India when Mahatma Gandhi launched the Civil Disobedience Movement in March 1930. He was the recipient of Gandhi's famous eleven-point demand letter before the Dandi March.

The two leaders eventually signed the Gandhi-Irwin Pact in 1931 to reach a temporary truce. Irwin's tenure was a critical period of intense nationalist activity and constitutional debate.

✅ Correct Answer: B. President

📚 Explanation: According to the Indian Constitution, the Chief Justice and other judges of the 'High Courts' are appointed by the 'President of India'. This is done after consultation with the Chief Justice of India and the Governor of the state.

The appointment process ensures that the judiciary remains independent of the state executive. This role is a vital constitutional duty of the President to maintain the integrity of the law.

✅ Correct Answer: D. convection currents are set up.

📚 Explanation: The cooling unit or freezer in a refrigerator is placed at the top to set up natural 'convection currents'. Since cold air is denser, it sinks to the bottom, while the warmer air from below rises to be cooled.

This continuous circulation ensures that the entire space inside the refrigerator is cooled efficiently and evenly. if the freezer were at the bottom, the cold air would stay there and the top would remain warm.

✅ Correct Answer: D. Dinabandhu Mitra

📚 Explanation: 'Neeldarpan' (The Indigo Mirror) is a famous Bengali play written by 'Dinabandhu Mitra' in 1860. it vividly describes the brutal exploitation and suffering of Indian farmers under European indigo planters.

The drama played a major role in raising public awareness and mobilizing the intellectual community during the Indigo Revolt. it remains a powerful symbol of social protest in Indian literature.

✅ Correct Answer: D. $\frac{2v₁v₂}{v₁ + v₂}$

📚 Explanation: When a journey is divided into two equal 'distances' covered at different speeds, the average speed is the harmonic mean of those speeds. The formula is 2 multiplied by v1 multiplied by v2, divided by (v1 plus v2).

This calculation accounts for the different times spent on each half of the journey. it is a standard mathematical result used in many distance-speed-time problems.

✅ Correct Answer: C. 100.101

📚 Explanation: To convert 4.625 to binary: 4 is '100'. For the decimal part, 0.625 multiplied by 2 is 1.25 (1), 0.25 multiplied by 2 is 0.5 (0), and 0.5 multiplied by 2 is 1.0 (1).

Combining the results gives '100.101'. This conversion is a fundamental part of binary arithmetic and computer science, showing how decimal values are represented in digital systems.

✅ Correct Answer: C. Iltutmish

📚 Explanation: The 'Iqta system' was a unique land revenue and administrative system introduced by Sultan 'Iltutmish' in the Delhi Sultanate. Under this, the empire was divided into regions called Iqtas, which were granted to military chiefs.

In return, the chiefs (Iqtadars) had to maintain troops and provide revenue to the Sultan. This system helped the ruler maintain a large army and stable administration across his vast territories.

✅ Correct Answer: B. Iqtiaruddin Bin Baktiar Khilji

📚 Explanation: 'Bakhtiar Khilji', a general of Muhammad Ghori, led a successful military expedition into Bengal in the early 13th century (around 1204 AD). He launched a surprise attack on Nadiya and defeated the Sena King Lakshmana Sena.

This event marked the beginning of Muslim rule in Bengal. He is also infamous for his destructive raid on the Nalanda and Vikramashila universities during his campaigns.

✅ Correct Answer: A. 78 A.D.

📚 Explanation: The 'Saka Era' (Sakabda) officially commenced in '78 A.D.' it is widely believed to have been started by the Kushan King Kanishka to commemorate his accession to the throne.

This calendar is very important in Indian history and is the basis for the Indian National Calendar. it has been used by various Indian dynasties for centuries to record historical events.

✅ Correct Answer: A. Munda uprising

📚 Explanation: 'Ulgulan' (The Great Tumult) is the term used to describe the massive 'Munda uprising' led by Birsa Munda in the late 19th century. it was a powerful tribal movement against British land policies and local exploitation.

The Mundas aimed to establish their own independent rule and restore their traditional rights over forests. Birsa Munda is revered as a hero and a god-like figure by the tribal communities today.

✅ Correct Answer: D. Alluri Sitha Rama Raju

📚 Explanation: 'Alluri Sitha Rama Raju' was the heroic leader of the Rampa Rebellion of 1922-24 in the coastal regions of Andhra Pradesh. He led a guerilla war against the British 'Forest Act', which restricted tribal rights.

He is celebrated as 'Manyam Veerudu' (Hero of the Jungles) for his bravery and sacrifice. His story was recently popularized globally through the award-winning Indian film RRR.

✅ Correct Answer: C. Muhammad Bin Tughlaq

📚 Explanation: The famous Moroccan traveler 'Ibn Battuta' visited India in 1333 during the reign of Sultan 'Muhammad Bin Tughlaq'. The Sultan was so impressed by his knowledge that he appointed him as the Qazi (Judge) of Delhi.

Ibn Battuta stayed in India for about eight years and wrote a detailed account of the Sultanate in his travelogue, Rihla. His writings are a primary source for 14th-century Indian history.

✅ Correct Answer: C. 1948

📚 Explanation: The 'First Industrial Policy Resolution' of independent India was announced in '1948'. it outlined the government's approach to industrial development, emphasizing a 'mixed economy' model.

The policy defined the roles of both the public and private sectors in building the nation's industry. it laid the foundation for the planned industrial growth that followed in the Five Year Plans.

✅ Correct Answer: C. √75816 cm.

📚 Explanation: To find the length of the ladder, we use the Pythagorean theorem: Length squared = (Height squared) + (Base squared). Calculation: (270 multiplied by 270) + (54 multiplied by 54).

This equals 72900 + 2916 = 75816. Therefore, the length of the ladder is exactly the 'square root of 75816' cm. This is a straightforward application of right-angled triangle geometry.

✅ Correct Answer: B. 3 3/4 hrs.

📚 Explanation: Together, they complete (1/6 + 1/10) of the work in one hour. This equals (5 + 3) divided by 30, which is 8/30 or 4/15 of the total job.

The time taken to finish the job is the reciprocal: 15/4 hours, which equals exactly '3 and 3/4 hours'. This is a standard work-and-time problem involving combined rates.

✅ Correct Answer: B. 226

📚 Explanation: The sequence follows a pattern based on adding the squares of prime numbers or an increasing gap: +1, +8, +27, +64. These gaps are the cubes of consecutive integers (1 cubed, 2 cubed, etc.).

Wait, checking: 37 + 64 = 101. The next gap should be 5 cubed, which is 125. Adding 125 to 101 gives '226'. Identifying this power-based progression in the differences solves the series.

✅ Correct Answer: D. Patient

📚 Explanation: This is an analogy based on the primary individuals served by a specific institution. A school is established to educate and care for 'Students'.

Similarly, a hospital is built to provide medical treatment and care for 'Patients'. While doctors and nurses work there, the patient is the person who receives the hospital's primary service.

✅ Correct Answer: D. Rs. 400

📚 Explanation: Manoj's rate is 10 pages/hr and Bobby's is 6.66 pages/hr. In 5 hours, they complete (50 + 33.33) = 83.33 pages. The remaining 16.66 pages are done by Lucy.

Lucy's work is 1/6th of the total report. Therefore, she should receive 1/6th of the total payment: 2400 divided by 6, which equals 'Rs. 400'. This problem divides pay based on the proportion of work done.

✅ Correct Answer: D. 1

📚 Explanation: The sequence decreases by subtracting consecutive prime numbers or a reducing gap: 32 - 13 = 19; 19 - 11 = 8. The next gap should be the next prime number down, which is 7.

Calculation: 8 - 7 = '1'. This logic uses a decreasing sequence of prime numbers as the rule for subtraction.

✅ Correct Answer: A. Every student is not genius.

📚 Explanation: The statement "All students are not genius" is a universal negative proposition. It means that there is no student who can be called a genius based on this rule.

Therefore, the equivalent phrase is "Every student is not genius." it describes a total absence of the 'genius' quality among the entire group of students mentioned.

✅ Correct Answer: A. Sunday

📚 Explanation: To find the day after a certain period, we divide the number of days by 7 to find the 'odd days'. Calculation: 59 divided by 7 leaves a remainder of 3.

Adding 3 days to Thursday leads to: Friday, Saturday, and finally 'Sunday'. This is a standard method for calculating future days of the week based on cycles of seven.

✅ Correct Answer: D. 22

📚 Explanation: The hands of a clock (hour and minute) coincide exactly once every hour, except during the 11-1 and 11-12 periods where they overlap only at 12. This results in 11 times in 12 hours.

In a full day of 24 hours, the hands will coincide exactly 11 multiplied by 2, which equals '22 times'. This is a fundamental fact of clock-based logic and geometry.

✅ Correct Answer: B. 68%

📚 Explanation: Number of students not in NCC = 1500 - 480 = 1020. The percentage is (1020 divided by 1500) multiplied by 100.

Calculation: 10200 / 150 = 1020 / 15 = '68%'. Therefore, 68 percent of the students are not enrolled in the NCC.

✅ Correct Answer: B. UNATTRACTIVE

📚 Explanation: 'Winsome' is an adjective used to describe someone who has a charming, engaging, and attractive appearance or manner. it is a highly positive word for someone's personality.

Therefore, 'UNATTRACTIVE' is the farthest in meaning as it represents the complete lack of charm or beauty. This contrast highlights the difference between an appealing and an unappealing person.

✅ Correct Answer: D. 1 : 8

📚 Explanation: First, convert both measurements to the same unit. Since 1 foot = 12 inches, 4 feet is equal to 48 inches.

The ratio is 6 inches to 48 inches, which simplifies by dividing both sides by 6 to '1 : 8'. This ensures the comparison is made using equal units of length.

✅ Correct Answer: C. (63, 8, 3)

📚 Explanation: The logic in the set (8, 3, 2) is: the first number is the second number squared minus 1 (3 multiplied by 3 - 1 = 8), and the second is the third squared minus 1 (2 multiplied by 2 - 1 = 3).

Checking the options, the set (63, 8, 3) follows the same rule: 8 multiplied by 8 - 1 = 63, and 3 multiplied by 3 - 1 = 8. This consistent pattern of squares minus one identifies the correct set.

✅ Correct Answer: A. Only ‘1’ and ‘3’ are strong.

📚 Explanation: Argument 1 is strong because it uses a global comparison to justify a policy change. Argument 3 is also strong as it highlights the practical benefit of increased efficiency and faster work completion.

Argument 2 is weak because following a legacy just for the sake of it is not a logical reason for policy. Argument 4 is a valid social concern but does not outweigh the economic and administrative strength of 1 and 3 in this context.

✅ Correct Answer: D. Grandmother

📚 Explanation: Let's trace the relations: Meghna's son is the father of Jhuma. The girl in the picture is the mother of Jhuma. This means the girl is the wife of Meghna's son.

In family relations, the mother of a person's husband is their mother-in-law, and the person is their daughter-in-law. However, relative to Jhuma (Meghna's grandchild), Meghna is the Grandmother. This logic follows the generations clearly.

✅ Correct Answer: A. 18 seconds

📚 Explanation: Since they are moving in the same direction, the relative speed is (41 - 11) = 30 kmph. In meters per second, this is 30 multiplied by (5/18), which equals 25/3 m/s.

Time taken is distance divided by speed: 150 divided by (25/3) = (150 multiplied by 3) divided by 25 = 6 multiplied by 3 = '18 seconds'. This formula calculates the time required to close the gap.

✅ Correct Answer: B. (6, 66, 120)

📚 Explanation: In the set (7, 77, 140), the second number is the first multiplied by 11, and the third is the first multiplied by 20. This establishes a clear multiplicative pattern.

Applying this to option B: 6 multiplied by 11 = 66, and 6 multiplied by 20 = 120. The set (6, 66, 120) follows the exact same logical multipliers as the original group.

✅ Correct Answer: A. Only ‘1’ is strong.

📚 Explanation: Argument 1 is strong because it focuses on merit and fairness, which are essential for a productive workforce. it highlights that deserving candidates should not be ignored based only on their age or tenure.

Arguments 2 and 3 are weak because humiliation is not a valid professional metric, and experience alone does not always guarantee the best suitability for a higher role. Merit-based promotion is the most logical system.

✅ Correct Answer: C. Greece

📚 Explanation: This is an analogy based on historical legislative bodies. The 'DUMA' was the name of the state assembly or parliament in 'Russia' during the early 20th century.

Similarly, 'ECCLESIA' was the principal assembly of the democracy in ancient 'Greece' (specifically Athens). It was the place where all male citizens could participate in decision-making.

✅ Correct Answer: C. Tapas is rich and so he has a lot of influence.

📚 Explanation: The original statement creates a direct link: being rich results in having influence. If Tapas is confirmed to be rich, then according to the rule, he must have influence.

This is a straightforward application of the given premise. other options either assume the reverse is true or generalize about poor people, which is not stated in the original rule.

✅ Correct Answer: B. Uncle

📚 Explanation: Somenath's "daughter's father" is Somenath himself. The "father of Somenath" is Somenath's father. The "only brother" of Somenath's father is the gentleman in the picture.

In family relations, the brother of one's father is called the 'Uncle'. This logic correctly identifies the relationship by simplifying the description step-by-step.

✅ Correct Answer: A. South-East

📚 Explanation: Mapping the movements: 5 km West, 3 km South (left turn), and 7 km East (left turn). He is now 2 km East of his original West-East line and 3 km South of the starting point.

Because he is to the East and South of point X, his current direction from the start is 'South-East'. Drawing this path on a compass grid makes the final relative position clear.

✅ Correct Answer: C. 120 feet

📚 Explanation: Under similar conditions, the ratio of height to shadow remains constant. Calculation: 64 divided by 96 equals height (H) divided by 180.

Simplifying the ratio: 2/3 = H/180. Therefore, H = (2 multiplied by 180) divided by 3, which equals '120 feet'. This is a simple problem of direct proportion.

✅ Correct Answer: C. Smoking may lead to cancer.

📚 Explanation: The statement "Many smokers get cancer" indicates a strong correlation between the two, but not a total certainty for every single person. it describes a significant health risk.

The phrase "Smoking may lead to cancer" correctly reflects this possibility based on the given information. it serves as a logical conclusion regarding the potential health outcomes of the habit.

✅ Correct Answer: B. Saturday

📚 Explanation: To find the day, we divide 61 by 7 to find the 'odd days'. Calculation: 61 divided by 7 leaves a remainder of 5.

Adding 5 days to Monday leads to: Tuesday, Wednesday, Thursday, Friday, and finally 'Saturday'. This is the standard way to calculate future week-days for any given period.