The ratio of rate of diffusion of oxygen to unknown gas is `1:4` The molar mass of unknown gas is
A) `2`
B) `4`
C) `28`
D) `16`

If the ratio of the rates of diffusion of two gases A and B is 4:1 the ratio of their density is

The ratio of rate of diffusion of gases A and B is 1:4 and their molar mass ratio is 2:3 .Calculate the composition of the gas mixture initially effusing out.

What is the ratio of rate of diffusion of gas A and B . The molecular mass of A is 11 and molecular mass of B is 44 .

Unknown gas diffuses with CO_(2) . Rate of diffusion of unknown gas is double than that of CO_(2) . The molecular weight of the unknown gas is

If the ratio of the rates of diffusion of two gases A and B is 4 : 1, then what is the ratio of densities of B and A ?

What is the ratio of the rate of diffusion of helium gas to that of oxygen under identical conditions?