Question

Is the presence of dust particles in air fixed​

Answer 1

Answer:

yes there are present of dirt particles in air are but not fixed

Explanation:

i think so

Answer 2

Answer:

Yes,it is fixed.

Explanation:

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.✔