A gaseous mixture was prepared by taking equal moles of CO and N₂. If the total pressure of the mixture was found to be 1 atmosphere, then the partial pressure of the nitrogen (N₂) in the mixture is:

1.  0.8 atm
2.  0.9 atm
3.  1 atm
4.  0.5 atm

The energy absorbed by each molecule (A₂) of a substance is 4.4 x 10^-19 J and bond energy per molecule is 4.0 x 10^-19 J. The kinetic energy of the molecule per atom will be:

1. $2.0\times {10}^{-20}$ $J$

2. $2.2\times {10}^{-19}$ $J$

3. $2.0\times {10}^{-19}$ $J$

4. $4.0\times {10}^{-20}$ $J$

If a gas expands at a constant temperature, it indicates that:

1. Kinetic energy of the molecules decreases

2. The pressure of the gas increases

3. The kinetic energy of the molecules remains the same

4. The number of molecules of gas increases

A gas at 350 K and 15 bar has a molar volume 20 percent smaller than that for an ideal gas under the same conditions. The correct option about the gas and its compressibility factor (Z) is:

50 mL of each gas A and of gas B takes 200 and 150 s respectively for effusing through a pinhole under the similar conditions. If the molecular mass of gas B is 36, the molecular mass of gas A will be:

1. 96

2. 128

3. 32

4. 64