50 mL of each gas A and of gas B takes 150 and 200 seconds respectively for effusing through a pin hole under the similar conditions. If molecular mass of gas B is 36, the molecular mass of gass A will be

A bubble of air is underwater at temperature 15^oC and the pressure 1.5 bar. If the bubble rises to the surface where the temperature is 25^oC and the pressure is 1.0 bar, what will happen to the volume of the bubble?

By what factor does the average velocity of a gaseous molecule increase when the temperature (in Kelvin) is doubled ?

A gaseous mixture was prepared by taking equal mole of CO and N₂. If the total pressure of the mixture was found 1 atmosphere, the partial pressure of the nitrogen (N₂) in the mixture is