Practice test

Heat, temperature and thermodynamics - Test Set 6

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

    Rate of evaporation increases with
    1. a decrease of temperature
    2. an increase of surface area
    3. an increase in humidity
    4. a decrease in wind speed
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  2. Question 2

    What is sublimation?
    1. It is the process of conversion of a liquid into gas.
    2. It is the process of conversion of a solid into liquid.
    3. It is the process of conversion of a solid into vapour.
    4. It is the process of conversion of a gas into liquid.
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  3. Question 3

    During the melting of solid, its temperature
    1. increased
    2. decreased
    3. may increase or decrease depending on the nature of solid
    4. Does not change
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  4. Question 4

    Burns caused by steam are much severe than those caused by boiling water because
    1. steam pierces through the pores of body quickly
    2. steam has latent heat
    3. steam is gas and engulfs the body quickly
    4. temperature of steam is higher
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  5. Question 5

    A cycle type bursts suddenly. This represents an
    1. isothermal process
    2. adiabatic process
    3. isochoric process
    4. isobaric process
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  6. Question 6

    Joule-Thomson process is extremely useful and economical for attaining low temperature. The process can be categorised as
    1. isobaric process
    2. isoenthalpic process
    3. adiabatic process
    4. isochoric process
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  7. Question 7

    Therm is the unit of
    1. Power
    2. Heat
    3. Light
    4. Distance
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  8. Question 8

    Ice is packed in sawdust because
    1. Saw dust does not stick to the ice
    2. Saw dust will not get melt easily
    3. Saw dust is a good conductor of heat
    4. Saw dust is a poor conductor of heat
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  9. Question 9

    Water is used in hot water bags because
    1. It is easily available
    2. It is cheap and not harmful
    3. Its specific heat is more
    4. Water can be heated easily
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  10. Question 10

    Which of the following metal has the maximum thermal conductivity?
    1. Iron
    2. Aluminium
    3. Copper
    4. Silver
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  11. Question 11

    A body absorbs maximum amount of heat when it is
    1. Black and rough
    2. Black and smooth
    3. White and rough
    4. White and smooth
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  12. Question 12

    Heat of a reaction does not depend upon.
    1. Temperature of reaction
    2. Path by which final product is obtained
    3. Physical state of product and reactant
    4. Reaction takes place at constant pressure or constant volume.
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  13. Question 13

    In Winter season water coming out of hand pumps is hot because
    1. In winter our body temperature remains low, so water makes us feel hot.
    2. Inside the earth temperature is more than the atmospheric temperature
    3. Due to pumping function is produced which causes heat and makes water hot
    4. Water comes out from the Earth and gains the heat from surroundings
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  14. Question 14

    Which of the following causes more burn?
    1. Boiling water
    2. Hot water
    3. Steam
    4. None of these
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  15. Question 15

    The direction of flow of heat between any two system depends on
    1. Their specific heat
    2. Their latent heat
    3. Their individual temperature
    4. Amount of heat they contain individually.
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  16. Question 16

    Due to the horizontal motion of air, transfer of heat is known as:
    1. Advection
    2. Convection
    3. Conduction
    4. Radiation
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  17. Question 17

    Burns caused by steam cause much more irritation than those caused by boiling water because
    1. Temperature of steam is higher
    2. Steam has latent heat of vaporization
    3. Steam is a gas and engulfs the pores of body quickly
    4. Steam pierces through the pores of body quickly.
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  18. Question 18

    Convection occurs in which of the following
    1. Only solids and liquids
    2. Only liquids and gases
    3. Only gases and solids
    4. Solid, liquid and gases
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  19. Question 19

    Which of the following liquid contains highest rate of vaporization.
    1. Kerosene oil
    2. Water
    3. Petrol
    4. Alcohol
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  20. Question 20

    The hottest part of gas flame is known as ______.
    1. Non-luminous zone
    2. Blue zone
    3. Luminous zone
    4. Dark zone
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