Heat

1

Thermal capacity of a body depends on the

  1. mass of the body only
  2. mass and shape of the body only
  3. density of the body
  4. mass, shape and temperature of the body
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2

Which of the following statements about specific heat of a body is/are correct?

  1. It depends upon mass and shape of the body
  2. It is independent of mass and shape of the body
  3. It depends only upon the temperature of the body

Select the correct answer using the codes given below

  1. Only 1
  2. 2 and 3
  3. 1 and 3
  4. Only 2
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3

A piece of ice, 100 g in mass is kept at 0°C. The amount of heat it requires to melt at 0°C is (take latent heat of melting of ice to be 333.6 J/g):

  1. 750.6 J
  2. 83.4 J
  3. 33360 J
  4. 3.336 J
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4

Two system are said to be in thermal equilibrium if and only if:

  1. there can be a heat flow between them even are at different temperatures
  2. there cannot be a heat flow between them even if they are at different temperatures
  3. there is no heat flow between them
  4. their temperature are slightly different
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5

The Celsius temperature is a/an

  1. approximate temperature
  2. absolute temperature
  3. specific temperature
  4. relative temperature
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6

A close bottle containing water at room temperature was taken to the Moon and then the lid is opened. The water will

  1. boil
  2. freeze
  3. not change at all
  4. decompose into oxygen and hydrogen
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7

Heat given to a body which raises its temperature by 1°C is known as

  1. water equivalent
  2. specific heat
  3. temperature gradient
  4. thermal capacity
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8

If the door of a running refrigerator in a closed room is kept open, what will be the net effect on the room?

  1. It will make the temperature go up and down
  2. It will make no difference on the average
  3. It will heat the room
  4. It will cool the room
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9

Which one of the following is the correct relation between the Kelvin temperature (T) and the Celsius temperature (tc)?

  1. These are two independent temperature scales
  2. T = tc
  3. T = tc - 273.15
  4. T = tc + 273.15
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10

A marble tile would feel cold as compared to a wooden tile on a winter morning, because the marble tile

  1. is a better conductor of heat than the wooden tile.
  2. is polished while wooden tile is not polished.
  3. reflects more heat than wooden tile.
  4. is a poor conductor of heat than the wooden tile.
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