When a gas jar containing air is inverted over a gas jar containing bromine vapour, the red-brown bromine vapour diffuse into air. Explain how bromine vapour diffuse into air.

When a gas jar containing colourless air is kept upside down over a gas jar full of brown-coloured bromine vapour, then after some time, the brown colour of bromine vapour spreads into the upper gas jar making both the gas jars appear brown in colour. Which of the following conclusion obtained from these observations is incorrect ?

When a gas jar full of air is placed upside down on a gas jar full of bromine vapours, the red-brown vapours of bromine from the lower jar go upward into the jar containing air. In this experiment :

A student placed a gas jar containing air in the upside down position over a gas jar full of red-brown bromine vapours. He observed that the red-brown colour spread upwards into the jar containing air. Based on this observation, the student concluded that it is only the bromine vapour which moves up and diffuses into air in the upper jar, the air from the upper jar does not move down by diffusion into the lower jar containing bromine vapours. Do you agree with this conclusion of the student ? Give reason for your answer.

What happens when a jar full of H_2 gas is placed inverted over a jar containing Cl_2 gas?

If air contains N_2 and O_2 in volume ratio 4:1, the average vapour density of air is :

The gas or vapour heavier than air is

Which of the two diffuses slower : bromine vapour into air or copper sulphate into water ?

If air contains N_(2) and O_(2) in volume ratio 4 : 1 , the average vapour density of air is:

Give a test to differentiate between two gas jars. One containing pure hydrogen and the other hydrogen air mixture.