Which of the following statement is correct ?
1
The numerical value of Universal gas constant is 8.31 J mole-1 K-1
2
The numerical value of Boltzmann's constant is 1.38 × 10-23 JK-1
3
Gay Lussac's Law state that if the volume remains constant, the pressure of given mass of a gas increased or decreased by 1/273.15 of its pressure at 0°C
4
All of the above
5
Question Not Attempted