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STD 11 - 10.1. thermonetry,thermal expansion and calorimetry — NEET STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceNEETSTD 11 - 10.1. thermonetry,thermal expansion and calorimetry4 Marks
MCQ
A solid material is supplied with heat at a constant rate. The temperature of material is changing with heat input as shown in the figure. What does slope $DE$ represent.
  • A
    latent heat of liquid
  • B
    latent heat of vapour
  • C
    heat capacity of vapour
  • ✓
    inverse of heat capacity of vapour
✓

Answer

Correct option: D.
inverse of heat capacity of vapour
d
The part $O A$ is the increase of temperature in solid state.

The part $A B$ is change of state from solid to liquid at constant temperature.

 The part $B C$ is the increase of temperature in liquid state.

The part $C D$ is change of state from liquid to gas at constant temperature.

The part $D E$ is the increase of temperature in gaseous phase, i.e., slope is heat capacity of vapour.

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