Which of the following is CORRECT for both gases and liquids?

The composition of …………. in air is about 78% by volume.

Which of the following expression at constant pressure represents Charles’s law?

The pressure of 2 mole of ideal gas at 546 K having volume 44.8 L is …………

At 300 K, the density of a certain gaseous molecule at 2 bar is double to that of dinitrogen at 4 bar. The molar mass of gaseous molecule is …………

As the temperature increases, average kinetic energy of molecules increases. What would be the effect of increase of temperature on pressure provided the volume is constant?

Assuming ideal gas behaviour, the ratio of density of ammonia to that of hydrogen chloride at same temperature and pressure is ………….. (Atomic wt. of Cl = 35.5 u)

The number of moles of $H_{2}H\_2$ in 0.224 L of hydrogen gas at STP (273 K, 1 atm) assuming ideal gas behaviour is ………

The volume occupied by 11.5 g of carbon dioxide at STP is approximately equal to:

Which of the following is CORRECT regarding a fixed amount of ideal gas?