how will you demonstrate that water vapour is present in air
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water evaporates and joins in air........becoz of the presence of water in air ..rain happens.....
if horlics is kept un caped in open air then it transforms itself into semi liquid state .....it proves that water is present in air.
if horlics is kept un caped in open air then it transforms itself into semi liquid state .....it proves that water is present in air.
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Place a glass full of cold water. You will see water droplets on the surface of glass. Rhis is because water vapour is present in the air. When it comes in contact with the cold glass it loses energy and condensates into water droplets.
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