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Q.

Choose the correct statement(s) among the following :

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a

Internal energy of  H2O remains constant during conversion of liquid into its vapour at constant temperature.

b

During fusion of ice into water enthalpy change and internal energy change are almost same at constant temperature

c

Molar heat capacity of gases are temperature dependent

d

During compression of an ideal gas at constant pressure, the temperature of gas decreases.

answer is B.

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Detailed Solution

Internal energy of  H2O does not remain constant during conversion of liquid into its vapour at constant temperature. So option A is incorrect.

Option B, C and D are correct.

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