Four gases P, Q, R and S have almost same values of ‘b’ but their ‘a’ values (a, b are van der Waals constants) are in the order Q < R < S < P. At a particular temperature, among the four gases the most easily liquefiable one is
P
Q
R
S
Four gases P, Q, R and S have almost same values of ‘b’ but their ‘a’ values (a, b are van der Waals constants) are in the order Q < R < S < P. At a particular temperature, among the four gases the most easily liquefiable one is