Practice test

Heat, temperature and thermodynamics - Test Set 3

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

    The temperature of two bodies being equal means
    1. Their heat contents are the same
    2. When they are brought in contact there will be no exchange of heat
    3. Their heat capacities are the same
    4. Their specific heats are the same
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  2. Question 2

    10 gm. of ice at 0°C is mixed with 10 gm. of water at 0°C. The temperature of the mixture will be
    1. 1°C
    2. 5°C
    3. 10°C
    4. 0°C
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  3. Question 3

    The process of joining two or more blocks of ice by pressing each other is called
    1. Refrigeration
    2. Radiation
    3. Regulation
    4. None of the above
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  4. Question 4

    At what temperature, mass of pure water of volume 1 cubic centimeter is 1 gm?
    1. 0°C
    2. 100°C
    3. 4°C
    4. 10°C
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  5. Question 5

    What is the main property of mercury for using it in a clinical thermometer?
    1. Good conductor of heat
    2. High density
    3. Good conductor of electricity
    4. Easily available
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  6. Question 6

    A small quantity of water is placed in a small cavity made in a block ice
    0°C. What will happen to the water?
    1. The water will freeze to ice at 0°C
    2. There will be no change in the temperature of water
    3. The temperature of water will decrease to 0°C but it will not freeze
    4. The water will freeze to ice if the block of ice is large compared to the mass of water
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  7. Question 7

    Absolute zero temperature is that temperature where
    1. Water freezes to ice
    2. All molecules of matter come to rest
    3. All matter stays in the solid state
    4. Kinetic and potential energies of molecules become equal to each other
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  8. Question 8

    Which surface is a good absorber of heat?
    1. White rough surface
    2. Black rough surface
    3. White smooth surface
    4. Black smooth surface
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  9. Question 9

    The heat required to raise the temperature of a body by 1K is called
    1. Specific heat
    2. Thermal capacity
    3. Water equivalent
    4. None of the above
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  10. Question 10

    The heat of the sun reaches us by
    1. Conduction
    2. Convection
    3. Radiation
    4. None of the above
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  11. Question 11

    If we add salt to pure water, its boiling point will
    1. increase
    2. decrease
    3. remains same
    4. None of the above
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  12. Question 12

    Good absorbers of heat are
    1. poor emitters
    2. non-emitters
    3. good emitters
    4. highly polished
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  13. Question 13

    Ventilators are provided at the top of the room
    1. to bring oxygen for breathing.
    2. so that sunlight may enter the room.
    3. to maintain convectional currents to keep the air fresh in the room.
    4. to provide an outlet for carbon dioxide.
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  14. Question 14

    In terms of thermal conductivity (k) and electrical conductivity (8), diamond has
    1. low k and high 8
    2. high k and low 8
    3. high k and high 8
    4. low k and low 8
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  15. Question 15

    Which of the following represents a relation for ‘heat lost = heat gained’?
    1. Principle of thermal equilibrium
    2. Principle of colours
    3. Principle of calorimetry
    4. Principle of vaporisation
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  16. Question 16

    The amount of heat required to change a liquid to gaseous state without any change in temperature is known as
    1. specific heat capacity
    2. mechanical equivalent of heat
    3. quenching
    4. latent heat of vaporisation
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  17. Question 17

    Which of the following statement(s) about latent heat for a given substance is/are correct?

    (I) It is fixed at a given temperature.
    (II) It depends upon the temperature and volume.
    (III) It is independent of temperature and volume.
    (IV) It depends on the temperature but independent of volume.
    1. Only II
    2. I and III
    3. Only IV
    4. I and IV
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  18. Question 18

    Which of the following is the methods of heat transfer?
    1. Convection
    2. Evaporation
    3. Revolution
    4. Thermal expansion
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  19. Question 19

    Why the clear nights are cooler than the cloudy nights?
    1. Conductance
    2. Condensation
    3. Radiation
    4. Insulation
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  20. Question 20

    In liquid and gases, transmission of heat takes place by
    1. conduction
    2. convection
    3. absorption
    4. advection
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