Practice test

States of matter and its structure - Test Set 2

Review 20 exam-focused questions with detailed explanations, then start the interactive test when you are ready.

20 questions

Questions and explanations

  1. Question 1

    SSC CGL 2019
    Name the law in Physics which states that equal volume of all gases under the same conditions of temperature and pressure contain equal number of molecules.
    1. Avogadro’s Law
    2. Boyle’s Law
    3. Ohm’s Law
    4. Charles’ Law
    View explanation

    Sign In to See Explanations. Sign Up Here

  2. Question 2

    Asst. Comm. 2018
    Lowering the atmospheric pressure on a liquid
    1. increases the boiling point of the liquid.
    2. lowers the boiling point of the liquid.
    3. does not affect the boiling point of the liquid.
    4. increases the time required for it to boil.
    View explanation

    Sign In to See Explanations. Sign Up Here

  3. Question 3

    CDS 2019
    For an ideal gas, which one of the following statements is not true?
    1. The speed of all gas molecules is same.
    2. The kinetic energies of all gas molecules are not same.
    3. The potential energy of the gas molecules is zero.
    4. There is no interactive force between the molecules.
    View explanation

    Sign In to See Explanations. Sign Up Here

  4. Question 4

    CDS 2013
    What are the elements which are liquids at room temperature and standard pressure?
    I. Helium
    II. Mercury
    III. Chlorine
    IV. Bromine
    1. II and III
    2. II, III and IV
    3. II and IV
    4. I and III
    View explanation

    Sign In to See Explanations. Sign Up Here

  5. Question 5

    SSC Multitasking 2014
    The purity of milk is determined by
    1. hydrometer
    2. lactometer
    3. stalagmometer
    4. thermometer
    View explanation

    Sign In to See Explanations. Sign Up Here

  6. Question 6

    SSC CHSL (10+2) 2013
    When the milk is churned vigorously the cream from it is separated out due to
    1. gravitational force
    2. frictional force
    3. centrifugal force
    4. centripetal force
    View explanation

    Sign In to See Explanations. Sign Up Here

  7. Question 7

    SSC (10+2) DEO & LDC 2013
    Iodine can be separated from a mixture of iodine and potassium chloride by
    1. sedimentation
    2. filtration
    3. sublimation
    4. distillation
    View explanation

    Sign In to See Explanations. Sign Up Here

  8. Question 8

    NDA/NA 2013
    Which one among the following is not a chemical change?
    1. Curdling of milk
    2. Ripening of fruit
    3. Evaporation of water
    4. Burning of coal
    View explanation

    Sign In to See Explanations. Sign Up Here

  9. Question 9

    NDA/NA 2012
    Statement I: Conversion of blue copper sulphate to black cupric oxide on heating is a physical change.
    Statement II: A change in which chemical composition does not change, is called physical change.
    1. Both the Statements are individually true and Statement II is the correct explanation of Statement I.
    2. Both the Statements are individually true but Statement II is not the correct explanation of Statement I
    3. Statement I is true, but Statement II is false.
    4. Statement I is false, but Statement II is true.
    View explanation

    Sign In to See Explanations. Sign Up Here

  10. Question 10

    NDA 2020
    A liquid is kept in a glass beaker. Which one of the following statement is correct regarding the pressure exerted by the liquid column at the base of the beaker?
    1. The pressure depends on the area of the base of the beaker.
    2. The pressure depends on the height of liquid column.
    3. The pressure does not depend on the height of liquid column.
    4. The pressure neither depends on the area of the base of the beaker nor on the height of liquid column.
    View explanation

    Sign In to See Explanations. Sign Up Here

  11. Question 11

    IAS (Pre) 2014
    Which of the following is/are the example / examples of chemical change?
    I. Crystallisation of sodium chloride
    II. Melting of ice
    III. Souring of milk
    1. I and II only
    2. III only
    3. I, II and III
    4. None of the above
    View explanation

    Sign In to See Explanations. Sign Up Here

  12. Question 12

    SSC CHSL (10+2) 2013
    The product of equivalent weight and valency of an element is equal to
    1. vapour density
    2. specific heat
    3. atomic weight
    4. molecular weight
    View explanation

    Sign In to See Explanations. Sign Up Here

  13. Question 13

    SSC 2016
    The molecular mass of a gas is
    1. twice of its vapour pressure
    2. equal to its vapour pressure
    3. half of its vapour pressure
    4. not associated with its vapour pressure
    View explanation

    Sign In to See Explanations. Sign Up Here

  14. Question 14

    CDS 2017
    How many atoms are present in 46 g of Na-23? (N-Avogadro's number)
    1. N/2
    2. N
    3. 2N
    4. 23N
    View explanation

    Sign In to See Explanations. Sign Up Here

  15. Question 15

    Which of the following is a characteristic property of solids?
    1. No definite shape
    2. Compressibility
    3. Definite shape and volume
    4. High diffusion rate
    View explanation

    Sign In to See Explanations. Sign Up Here

  16. Question 16

    What is the SI unit of temperature?
    1. Celsius
    2. Fahrenheit
    3. Kelvin
    4. Joule
    View explanation

    Sign In to See Explanations. Sign Up Here

  17. Question 17

    Which state of matter has the highest kinetic energy?
    1. Solid
    2. Liquid
    3. Gas
    4. Plasma
    View explanation

    Sign In to See Explanations. Sign Up Here

  18. Question 18

    Who is known as the father of modern chemistry?
    1. Ernest Rutherford
    2. Dmitri Mendeleev
    3. John Dalton
    4. Antoine Lavoisier
    View explanation

    Sign In to See Explanations. Sign Up Here

  19. Question 19

    The smallest unit of matter that retains the properties of an element is:
    1. Atom
    2. Molecule
    3. Ion
    4. Compound
    View explanation

    Sign In to See Explanations. Sign Up Here

  20. Question 20

    The process of mixing of two substances due to the motion of their particles is called:
    1. Melting
    2. Diffusion
    3. Evaporation
    4. Sublimation
    View explanation

    Sign In to See Explanations. Sign Up Here