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[" The change in entropy of 2moles of an...

[" The change in entropy of 2moles of an ideal gas upon isothermal expansion at "243.6K" from "20" litre until "],[" the pressure becomes "1atm," is: "],[[" (A) "1.385" cal "/K," (B) "-1.2" cal "/K," (C) "1.2cal/K," (D) "2.77cal/K]]

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