Neha took an apple from the fridge and kept it out. A little later she observed water droplets on it. This is due to the presence of in the air.

water vapour

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carbon dioxide

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nitrogen

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Solution

The correct option is A water vapour
This proves the presence of water vapour in the air.

In this situation, it is the water vapour present in the air that on contact with the surface of the cold apple, cools down and changes into liquid water.
This phenomenon by which a gas turns to liquid due to decrease in temperature is called condensation.

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