How can you show that the water vapour is present in air
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Answer. to show the presence of water vapour in air keep e bottle full of water in the refrigerator and bring it ou of it after 2-3 hrs. after 30-40 seconds you will see small water droplets will form on the surface of the bottle. this experiment shows the presence of water vapour in air.
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Put any cold substance there you will see water droplets on the surface of the object
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