Question

How will you demonstrate the water vapour in present in the

Answer 1

Hey !!!
We can demonstrate with the help of an activity:
1. Take a ice cold water in a glass.
2.leave it for some time.
3. After sometimes we will see that some droplets of water will appear on the surface of water.

This shows that water vapours are present in the air which come in contact with the cool surface of glass filled with water. As evaporation causes cooling.
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Hope it will help you

Answer 2

Answer:

a)Take out a bottle of soft drink from the refrigerator and place it on the table. b)Observe it for few minutes.

c)you will see small drops of water appearing on the outer surface of the bottle.

d) This is because water vapour present in the air condenses and forms small drops of water.

e) This activity proves that air contains water vapour.