Gaseous StateHard

Question

The curve of pressure volume (PV) against pressure (P) of the gas at a particular temperature is as shown, according to the graph which of the following is incorrect (in the low pressure region):
 

Options

A.H2 and He shows +ve deviation from ideal gas equation.
B.CO, CH4 and O2 show negative deviation from ideal gas equation.
C.H2 and He show negative deviation while CO2, CH4 and O2 show positive deviation.
D.H2 and He are less compressible than that of an ideal gas while CO2, CH4 and O2 more compressible than that of ideal gas.

Solution

If Z > 1 positive deviation
Z < 1 negative deviation

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