Q.

P-V plots for two gases during adiabatic processes are shown in the figure. Plots 1 and 2 should correspond respectively to

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a

He and Ar

b

He and O2

c

O2 and N2

d

O2 and He

answer is D.

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Detailed Solution

In the graph given, slope of curve 2 is greater than the slope of curve 1 γPV2>γPV1⇒γ2>γ1                           γHe>γO2  Since, γmonoatomic >γdiatomic  Hence, curve 2 corresponds to helium and curve 1 corresponds to oxygen.
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