5 moles of Hydrogen (gamma =(7)/(5)) ini...

5 moles of Hydrogen `(gamma =(7)/(5))` initially at STP are compressed adiabatically so that its temperature becomes `400^(@)C`. The increase in the internal energy of the gas in kilo-joule is `[R =8.30 J mol^(-1)K^(-1)]`

A

21.55

B

41.5

C

65.55

D

80.55

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The correct Answer is:

B

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