If two gases X and Y have their molecules travelling at the velocities in the ratio of `3 : 1`. The ration of their molecular mass `M_(x)//M_(y)` will be

Two samples of gases 'a' and 'b' are at the same temperature. The molecules of 'a' are travelling 4 times faster than molecules of 'b'. The ratio of M_(a)//M_(b) will be

Two samples of gases 'a' and 'b' are at the same temperature. The molecules of 'a' are travelling 4 times faster than molecules of 'b'. The ratio of M_(a)//M_(b) will be

Two samples of gases 'a' and 'b' are at the same temperature. The molecules of 'a' are travelling 4 times faster than molecules of 'b'. The ratio of M_a//M_b will be

The rate of diffusion of two gases X and Y is in the ration of 1:5 and that of Y and Z in the ratio of 1:6 . The ratio of the rate of diffusion of Z with respecte to X is :

The rate of diffusion of two gases X and Y is in the ration of 1:5 and that of Y and Z in the ratio of 1:6 . The ratio of the rate of diffusion of Z with respecte to X is :

Two sample of gases A and B are at the same temperature. The molecules of A are travelling 4 times faster than molecules of B. The ratio M_(A) //M_(B) of their masses will be

A mixture of two gases is contained in a vessel. The Gas 1 is monoatomic and gas 2 is diatomic and the ratio of their molecular masses M 1 ​ /M 2 ​ =1/4. the ratio of root mean square speeds of the molecules of two gases is