Statement 1 : The compressibility factor for H2 and He is 1+bPRT.Statement 2 : The compressibility factor for H2 and He can be derived from van der Waals' equation.

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Both Statement 1 and Statement 2 are true.

Statement 1 is true and Statement 2 is false.

Statement 1 is false and Statement 2 is true.

Both Statement 1 and Statement 2 are false.

answer is A.

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Detailed Solution

P+aV2 V-b= RT; for H2 and He, a is very small because of low molar mass. Thus,PV=RT+Pb. Now Z =PVRT=1+PbRT.

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