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42. Energy of all molecules of a monoatomic gas having a volume V and pressure P is (3/2)PV . The total translational kinetic energy of all molecules of a diatomic gas as the same volume and pressure is

(a) (1/2)PV                                   (b) (3/2)PV

(c) (5/2)PV                                    (d) 3PV

Answer-b

(7)

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