Which of the following gases are arranged in increasing order of diffusion rate? [H = 1 .0; C = 12; N = 14; O = 16; S = 32]

A. SO2, O2, NH3, H2
B. H2S, NH3, O2, SO2
C. CO2, N2O, O2, SO2
D. NH3, NO2, N2, CO2

Correct Answer: Option A

A. SO2, O2, NH3, H2