Question

how will you show the dust particles are present in air​

Answer 1

Answer:

I think that this may help you to get understanding..

Explanation:

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Answer 2

Answer:

Aim: To show the presence of dust particles in the air

Method: Close the doors and windows of a room,preferably a sun-facing room during daytime.Now open a door,window or ventilator slightly such that a stream or a narrow beam of sunlight enters the room.We can see tiny particles moving randomly in that beam of light.This proves the presence of dust particles in the air.

Hence,proved.✔