Question

(c) How do you know that air contains water vapour?​

Answer 1

Answer:

The presence of water vapour in air can be demonstrated by the following experiment: We take a steel tumbler and put some well crushed ice in it. When these water vapour come in contact with the cold, outside surface of steel tumbler, they condense to form tiny droplets of water

Answer 2

Answer:

the presence of water vapour in air can be demonstrated by the following experiment :

We take a steel tumbler and put some well crushed ice in it.when these water vapour come in contact with the cold, outside surface of steel tumbler , they condense to form tiny droplets of water