Which of the following statements is/are true?
(A) Hydrogen diffuses four time faster than oxygen
(B) The temperature of a real gas changes when it expands adiabatically in vaccum
(C) An ideal gas undergoes cooling effect when it suffers an adiabatic expansion in vaccum
(D) The Joule- Thomson coefficient (`(del T)/(del P))_(H)` of an ideal gas is zero

Which of the following statement is incorrect when a system consisting of ideal gas undergoes change of state?

The temperature of an ideal gas undergoing adiabatic expansion varies with volume as T prop V^(-(3)/(4)) , then the value of (C_(P))/(C_(V)) for the gas is

One mole of an ideal gas, C_(p)=4R at 300K is expanded adiabatically to n times the original volume.What is value of n if temperature falls by 150^(0) ?

which of the following statement(s) is//are incorrect? Statement (a) : Reversible isothermal compression of an ideal gas represents the limiting minimum value of the work done (|omega|) by the surrounding on the system . Statement (b) : For thermodynamic changes in adiabatic process T^(((C_(p.m))/(R))) .P = constant Statement (c): DeltaS_(system) is zero for reversible adiabatic expansion of an ideal gas.