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13. An insulator container contains 4 moles of an ideal diatomic gas at temperature T. Heat Q is supplied to this gas, due to which 2 moles of the gas are dissociated into atoms but temperature of the gas remains constant. Then

(a)   Q = 2RT                         (b) Q=RT

(c)    Q= 3RT                        (d) Q= 4RT

Ans. b

(3)

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