Question

Consider the graph between compressibility factor $Z$ and pressure $P$ :

The correct increasing order of ease of liquefaction of the gases shown in the above graph is

• A. $H _{2}< N _{2}< CH _{4}< CO _{2}$
• B. $CO _{2}< CH _{4}< N _{2}< H _{2}$
• C. $H _{2}< CH _{4}< N _{2}< CO _{2}$
• D. $CH _{4}< H _{2}< N _{2}< CO _{2}$

Answer 1

Answer: (A)

$Z$ is less than $1$ means more compressible gases while $Z>1$ means less compressible gases.