Densities of two gases are in the ratio `1: 2` and their temperatures are in the ratio `2:1`, then the ratio of their respective pressure is

If the pressures exerted by two ideal gases are in the ratio 3 : 2 and their densities are in the ratio 2 : 1 , then the ratio of their r.m.s. velocities is

Two gases have densities in the ratio 2:3 and pressure exerted are in the ratio 3:2. then the ratio of their RMS velocity is

The vapour densities of two gases are in the ratio of 2 : 5 Their molecular masses are in the ratio of

The vapour densities of two gases are in the ratio of 1 : 3 . Their molecular masses are in the ratio of : -

The vapour densities of two gases are in the ratio of 1 : 3 . Their molecular masses are in the ratio of : -