At constant temperature and pressure which of the following gases will diffuse first ?

At the same temperature and pressure, which of the following gases will have highest kinetic energy per mole ?

If an eddothermic reaction occurs spontaneously at constant temperature and pressure, then which of the following is true?

Under similar conditions of temperature and pressure, In which of the following gases the velocity of sound will be largest :-

Under simuliar conditions of temperature and pressure, in which of the following gases the velocity of sound will be largest?

20 ml of CO is exploded with 30 ml of O_2 at constant temperature and pressure. Final volume of the gases in ml will be

Indicate the correct answer: rate of diffusion of helium gas at constant temperature and pressure will be four times of the rate of diffusion of which of the following gases-