The kinetic energy for 14 grams of nitrogen gas at 127°C is nearly -

(mol. mass of nitrogen = 28 and gas constant = 8.31JK^–1mol^–1) 

1. 1.0 J

2. 4.15 J

3. 2493 J

4. 3.3 J

Pressure versus volume graph for a real gas and an ideal gas is shown below: 

The correct statement among the following is -

1. Real gases show a large deviation from ideal behaviour at low pressure.

2. Real gases show a very small deviation from ideal behaviour at low pressure.

3. Real gases do not behave ideally under any conditions at low pressure.

4. None of the above statements is correct

A helium atom is two times heavier than a hydrogen molecule. At 298 K, the average kinetic energy of a helium atom is-

1. Same as that of a hydrogen molecule

2. Half that of a hydrogen molecule

3. Two times that of a hydrogen molecule 

4. Four times that of a hydrogen molecule