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How will you demonstrate that water vapour is present in air?

Asked by Kanhaiya 4th May 2015, 6:07 PM
Answered by Expert

Take a dry glass and ensure it is dry from outside.

Now place a few ice cubes inside the glass.

Now wait for a few minutes.

You would observe droplets of water appear on the outside of the glass.

This takes place because of condensation.

So we can conclude that water vapour is present in air and when it comes in contact with cold objects changes into  liquid form.

Answered by Expert 4th May 2015, 6:22 PM
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