The compressibility factor for an ideal gas is 1. Its value for any other real gas is

A. 1

B. < 1

C. > 1

D. Either (b) or (c), depends on the nature of the gas

Answer: Option D

Solution(By Examveda Team)

As the real gas can deviate positively or negatively from ideal behavior it can have
$$Z$$ (compressibility factor) > 1 → positive deviation.
$$Z$$ < 1→ negative deviation.