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If mass-energy equivalence is taken into...

If mass-energy equivalence is taken into account, when water is cooled to from ice, the mass of water should

A

Increase

B

Remain unchanged

C

Decrease

D

First increase then decrease

Text Solution

Verified by Experts

The correct Answer is:
B
When water is cooled at `0^(@)C` to from ice then `80 "calorie"//gm` (latent heat) energy is released. Beacuse potential energy of the molecules decreases. Mass will remain constant in the process of freezing of water.
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Knowledge Check

  • If mass-energy equilivalence is taken into account, when water is cooled to from ice, the mass of water should

    A
    increase
    B
    remains unchanged
    C
    decrease
    D
    first increase then decrease

  • If mass-energy equivalence is taken into account , when water is cooled to form ice, the mass of water should :-(Note: The mass energy of an object is the energy equivalent of its mass , as given by E= mc^(2) , where m= mass of object & c = speed of light)

    A
    increase
    B
    remain unchanged
    C
    decrease
    D
    first increase then decrease

  • When water is cooled to ice its entropy

    A
    Increases
    B
    Decreases
    C
    Remains same
    D
    Becomes zero
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