Question

Molecular attraction and size of the molecules in a gas are not negligible at:

• A. critical point
• B. high pressure
• C. high temperature and low pressure
• D. low temperature and high pressure

Answer 1

Answer: (A), (B), (D)

The correct options are
A critical point
B high pressure
D low temperature and high pressure

At the critical point, the gases can be liquefied and hence there is a force of attraction which can not be neglected
At high pressure and low temperature, gases are close to each other and hence they experience the force of attraction.

Hence, the correct options are $\text{A},$ $\text{B}$ and $\text{D}$