In which case rate of diffusion is highest if all are present in the same container at the same temerature:

1. 4g H₂

2. 32g O₂

3. 22g CO₂

4. 56g N₂

The rate of diffusion of two gases A and B is in the ratio of 1:4 and the B and C in the ratio 1:3 the rate of diffusion of C with respect to A is 

1. 1/12

2. 12

3. 3

4. 4

A sample of air contains only N₂, O₂ and H₂O. It is saturated with water vapours and the total pressure of 640 torr. The vapoure pressure of water is 40 torr and the molar ratio of N₂:O₂ is 3:1. The partial pressure of N₂ in the sample in 

1. 480 torr

2. 600 torr

3. 525 torr

4. 450 torr

20 L of SO₂ diffuses through a porous partition in 60s. Volume of O₂ diffuse under similar condition in 30s will be:-

1. 12.14 L

2. 14.14 L

3. 18.14 L

4. 28.14 L

A gas diffuses four time quickly as oxygen. The molecular weight of gas is:

1. 2

2. 4

3. 8

4. 16