21.Pick up correct answer among the following about Boyles temperature

22.The mixture of three gases X (density 0.09), Y (density 0.178) and Z (density 0.42) is enclosed in a closed vessel at constant temperature. When equilibrium is establisted, the

23.500 ml of gas A at 1000 torr and 1000 ml of gas at 800 torr ate placed in an empty container of 2 L capacity. The pressure in the container would be

24.The rate of diffusion of methane at certain temperature is 2 times that of gas X. The molecular mass of X is

25.One litre of a certain gas weighs 2 g at 300 K and 1 atm pressure. If pressure is reduced to 0.75 atm, then at which temperature 1 litre of the gas will weigh equal to 1 gm