The interaction energy of London force is inversely proportional to sixth power of the distance between two interacting particles. Their magnitude depends upon-

1. Charge of interacting particles.

2. Mass of interacting particles.

3. Polarizability of interacting particles.

4. Strength of permanent dipoles in the particles.

Dipole-dipole forces act between the molecules possessing permanent dipole. Ends of dipoles possess 'partial charges'.

The partial charge will be-

1. More than unit electronic charge.

2. Equal to unit electronic charge.

3. Less than unit electronic charge.

4. Double the unit electronic charge.

The increase in pressure  in order to decrease the volume of a gas by 5% at a constant temperature will be -

1. 5%

2. 5.26%

3. 10%

4. 4.26%

At constant temperature, 200 cm³ of N₂ at 720 mm and 400 cm³ of O₂ at 750 mm pressure are put together in a one-litre flask. The final pressure of the mixture is- 

1. 111 mm

2. 222 mm

3. 333 mm

4. 444 mm

A collapsed polythene bag of 30 litre capacity is partially blown up by the addition of 10 litre of N₂ at 0.965 atm at 298 K. Subsequently,  enough O₂  is pumped into bag so that at 298 K and external pressure of 0.990 atm, the bag contains full 30 litre. The final pressure of O₂ in the following experiment is-

Choose the correct option for graphical representation of Boyle's law, which shows a graph of pressure vs. volume of a gas at different temperatures:

1.
2.
3.
4.

The volume of a gas is 100 ml at 100°C. If the pressure remains constant then the temperature at which the volume becomes 200 ml is-

1. 200°C

2. 473°C

3. 746°C

4. 50°C

If 300 ml of a gas at 27°C is cooled to 7°C at constant pressure, its final volume will be:

A flask containing air (open to atmosphere) is heated from 300 K to 500 K. The percentage of air escaped to the atmosphere is nearly- 

1. 16.6

2. 40

3. 66

4. 20