A

For a gas A, a = 0, and Z will linearly depend on pressure.

B

For gas B, b= 0, and Z will linearly depend on pressure.

C

Gas C is a real gas and we can find 'a' and b' if intersection data is given.

D

All van der Waals gases will behave like gas C and gives positive slope at high pressure.

Text Solution

Verified by Experts

The correct Answer is:
B
For gas B, b = 0 so that `Z=1-(a)/(VRT)`
`therefore" Z does not vary linearly with p"`
`therefore " (b) is not correct."`
For gas A, a = 0 `Z=1+(pb)/(RT)`
`therefore" Z varies linearly with p"`
`therefore" (a) is correct."`
Given the intersection data for gas C, it is possible to calculate .a. and .b..
`therefore" (c ) is correct choice."`
All van der Waals gases like gas C give positive slope at high pressure
`therefore" (d ) is correct."`
Hence (b) is correct choice.
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