Deviation from Ideal Gas Behaviour — Prelims Questions

Which of the following conditions is most favorable for a real gas to behave like an ideal gas?

For a real gas, if the compressibility factor (Z) is less than 1 ($Z < 1$), it indicates that:

The van der Waals constant 'a' for four gases are given below. Which gas is most easily liquefiable?

At high pressure, the compressibility factor (Z) for most real gases is greater than 1. This is primarily due to:

Which of the following statements about the van der Waals constant 'b' is correct?

A real gas behaves most ideally at a temperature known as the Boyle temperature ($T_B$). Which of the following statements is true regarding the compressibility factor (Z) at $T_B$?