Assertion: At a given temperature,the specifi | vedclass

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(C) According to Mayer's relation,$C_p - C_v = R$. Since $R > 0$,it follows that $C_p > C_v$. This is because when a gas is heated at constant pressur

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If the Assertion is correct but Reason is incorrect.

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(C) According to Mayer's relation,$C_p - C_v = R$. Since $R > 0$,it follows that $C_p > C_v$. This is because when a gas is heated at constant pressure,it expands and does work against external pressure. Therefore,extra heat is required to perform this work in addition to the heat required to increase the internal energy. Conversely,at constant volume,no work is done by the gas,so all supplied heat is used only to increase the internal energy. Thus,the Assertion is correct,but the Reason states the opposite (that extra heat is needed at constant volume),making the Reason incorrect.

Column-$I$	Column-$II$
$(a)$ Monoatomic gas	$(i)$ ${C_P} = \frac{3}{2}R$
$(b)$ Diatomic gas with vibration	$(ii)$ ${C_P} = \frac{5}{2}R$
	$(iii)$ ${C_P} = \frac{7}{2}R$
	$(iv)$ ${C_P} = \frac{9}{2}R$

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