Question

State the reason why water gets filled in the dropper when we press the bulb of a

dropper before placing its nozzle in water.​

Answer 1

Answer:

because the particles of air are driven out of the bulb and to fulfill the vacant space particles of water get into the nozzle of the dropper.

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Answer 2

Explanation:

when we press the bulb it push all the air molecules outside with high pressure creating a vacuum and hence it faces more atmospheric pressure because there is no molecules to face atmospheric pressure so as we release the bulb because of the atmospheric pressure is increased outside so it takes the water inside