Practice test

Heat, temperature and thermodynamics - Test Set 1

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

    Temperature inversion is:
    1. Positive lapse rate
    2. Negative lapse rate
    3. Neutral condition
    4. None of these
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  2. Question 2

    To produce the low temperature which of the following principle is used:
    1. Super conductivity
    2. Joule - kelvin Effect
    3. Heading effect of current
    4. Adiabatic Demagnetization process
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  3. Question 3

    Absolute zero is defined as the temperature
    1. At which all molecular motion ceases
    2. At which water boils at 298K
    3. At which liquid helium boils
    4. At which volume becomes zero
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  4. Question 4

    In which form is the supplied heat energy stored during change in temperature of substance?
    1. Heat Energy
    2. Kinetic Energy
    3. Potential energy
    4. Both kinetic and potential energy
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  5. Question 5

    Gas thermometers are more sensitive than liquid thermometer because the gases
    1. Have larger coefficient of expansion
    2. Are lighter
    3. Have low specific heat
    4. Have high specific heat
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  6. Question 6

    What changes will happen to a bowl of ice and water kept at exactly zero degree Celsius.
    1. All ice will melt
    2. All water will become ice
    3. No change will happen
    4. Only some ice will melt
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  7. Question 7

    The temperature of boiling water in a steam engine may be high because
    1. There are dissolved substances in water
    2. There is low pressure inside the boiler
    3. There is high pressure inside the boiler
    4. The fire is at very high temperature
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  8. Question 8

    Which of the following instruments is used to measure humidity?
    1. Kata Thermometer
    2. Anemometer
    3. Sling Psychrometer
    4. Clinical Thermometer
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  9. Question 9

    What is triple point of water:
    1. 273.16 K
    2. 273.15 K
    3. 0°C
    4. 100°C
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  10. Question 10

    The freezing point of fresh water is:
    1. 3°C
    2. 5°C
    3. 0°C
    4. 4°C
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  11. Question 11

    Like freeze in cold countries in winter, leaving the water underneath at:
    1. 0°C
    2. 0°F
    3. 4°C
    4. 4°F
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  12. Question 12

    Why boiling point of water decreases with increase in altitude
    1. Low temperature
    2. Low atmospheric pressure
    3. High temperature
    4. High atmospheric pressure
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  13. Question 13

    Why clouds float in atmosphere?
    1. Low pressure
    2. Low density
    3. Low viscosity
    4. Low temperature
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  14. Question 14

    Soldering of two metals is possible due to the property of
    1. Diffraction
    2. Viscosity
    3. Surface tension
    4. Cohesion
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  15. Question 15

    In extreme cold conditions in cold countries, water pipes get busted
    1. Because on freezing water expands
    2. Due to the contraction of water pipes
    3. Due to high atmospheric pressure
    4. All of these
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  16. Question 16

    Pressure cooker cooks faster because
    1. Boiling point increases with increase in pressure
    2. It cooks the food at low pressure
    3. Higher temperature is attained for cooking
    4. The material of the cooker is a good conductor.
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  17. Question 17

    Water is not vaporized if
    1. Temperature is 0°C
    2. Humidity is 0%
    3. Humidity is 100%
    4. Temperature is 100°C
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  18. Question 18

    When heated from 0°C to 100°C volume of a given mass of water will
    1. Increase gradually
    2. Decrease gradually
    3. Increase and then will decrease
    4. Decrease and then will increase
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  19. Question 19

    Vegetables are cooked in lesser time by adding a pinch of salt while cooking because
    1. Boiling point of water increases
    2. Latent heat of vaporization of water decreases
    3. Latent heat of vaporization of water increases
    4. Boiling point of water decreases
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  20. Question 20

    The boiling point of liquid vary as
    1. Pressure varies
    2. Temperature varies
    3. Volume varies
    4. Density varies
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