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Question 30855
JEE Physics · Hard

Elasticity, Thermal Expansion, Calorimetry and Heat Transfer: Latent Heat MCQ

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Latent HeatHardQuestion 30855

Question

At constant pressure, during phase change (melting), temperature stays constant because:
  1. A
    No heat is absorbed
  2. B
    Heat is used to break intermolecular bonds, not raise KE
    Correct
  3. C
    Pressure falls compensating temperature
  4. D
    Specific heat becomes infinite

Correct answer

Heat is used to break intermolecular bonds, not raise KE

Explanation

Latent heat goes into potential energy (breaking bonds) without changing average kinetic energy, so temperature stays constant during phase change.

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