Question

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) Air is heavier than bromine (b) Both air and bromine have the same density (c) Bromine is heavier than air d) Bromine cannot be heavier than air because it is going upwards against gravity

Answer 1

Explanation:

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 , Bromine vapour (or bromine gas) is red-brown in colour, and it is heavier than air ; therefore it is settling in bottom of appratus and air is rising at the top of apparatus.

Thus Option C is correct.

Answer 2

c)Bromine is heavier than air.......