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The quantity of heat needed to change unit mass of a substance from liquid to vapour without changing the temperature, is called

Options

  1. Aspecific heat
  2. Bspecific latent heat
  3. Cthermal capacity
  4. Dheat energy

Correct answer

B. specific latent heat

Step-by-step solution

The quantity of heat required to change the state of a unit mass of a substance from liquid to vapour at constant temperature is known as the specific latent heat of vaporization. Specific heat is the heat required to raise the temperature of a unit mass by one degree. Thermal capacity is the heat required to raise the temperature of the entire body by one degree. Therefore, the correct term is specific latent heat. Answer: specific latent heat

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