Question

Solve this :

63. The correct increasing order of the value of Vander waals's constant 'a' for CH4, O2 and H2 gases is -(1) H2 < O2 < CH4(2) H2 < CH4 < O2(3) CH4 < O2 < H2(4) O2 < CH4 < H2

Answer 1

The van der waals constant a depends directly on density square. Since CH4 is denser than O2 and O2 is denser than H2, option (1) looks the appropriate one