Atmospheric pressure — task. Science CBSE Homework Assignments, Class 8.

When we press the bulb of a dropper with its nozzle kept in water, air in the dropper is seen to escape in the form of bubbles. Once we release the pressure on the bulb, water gets filled in the dropper. The rise of water in the dropper is due to

gravity of the earth
pressure of water
atmospheric pressure
shape of rubber bulb

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1. Atmospheric pressure

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