Practice test

Heat, temperature and thermodynamics - Test Set 8

Review 14 exam-focused questions with detailed explanations, then start the interactive test when you are ready.

14 questions

Questions and explanations

  1. Question 1

    A blackbody can absorb radiations of
    1. Lower wavelengths only
    2. Intermediate wavelength only
    3. Higher wavelengths only
    4. All wavelengths
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  2. Question 2

    In a refrigerator a cooling system should always be
    1. At the top
    2. At the bottom
    3. At the middle
    4. Can be anywhere
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  3. Question 3

    In a refrigerator what produces cooling?
    1. The ice which deposits on the freezer
    2. The sudden expansion of a compressed gas
    3. The evaporation of a volatile liquid
    4. None of these
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  4. Question 4

    Outside of cooking utensils are generally left black from below because
    1. It is difficult to clean daily
    2. Black surface is a good conductor of heat
    3. Black surface is a poor conductor of heat
    4. Black surface is a good absorber of heat
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  5. Question 5

    What is not true about temperature?
    1. It is one of the Seven SI base quantities
    2. It is measured in degree Celsius in SI unit.
    3. Temp 0°C = 273.15 K.
    4. All are true.
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  6. Question 6

    Density of water is IG/CC. It is strictly valid at:
    1. 0°C
    2. 4 °C
    3. 25 °C
    4. 100 °C
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  7. Question 7

    When temperature difference between liquid & its surroundings is doubled, the rate of loss of heat will
    1. Remains same
    2. Double
    3. Three times
    4. Four times
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  8. Question 8

    The temperature of a liquid is 32°F what is the temperature in Celsius scale?
    1. 32°C
    2. 0°C
    3. 100°C
    4. 212°C
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  9. Question 9

    The temperature at which Reading of both Fahrenheit scale and Celsius scale are same:
    1. 400
    2. -40
    3. -340
    4. -1440
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  10. Question 10

    Temperature of distant luminous bodies can be determined by
    1. Mercury Thermometers
    2. Gas Thermometers
    3. Pyrometers
    4. Colour Thermometers
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  11. Question 11

    To measure very high temperature, we use:
    1. Mercury thermometer
    2. Platinum Resistance thermometer
    3. Thermoelectric Pyrometer
    4. None of these
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  12. Question 12

    On a cold day when the room temperature is 15°C the metallic cap of a pen becomes much colder than its plastic body though both are at the same temperature of 15°C because
    1. Metals have high thermal capacity than plastics
    2. Plastics have lower density than metals
    3. Metals are good conductor of heat
    4. Plastics have higher thermal conductivity than metals
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  13. Question 13

    O K is equivalent to
    1. 273°C
    2. -273°C
    3. 0°C
    4. 100°C
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  14. Question 14

    The minimum temperature is measured by
    1. Alcohol Thermometer
    2. Thermometer
    3. Maximum Reading Thermometer
    4. Minimum Reading Thermometer
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