Q. Atmosphere contains dust particle, pollen grains, smoke etc which are collectively known as :

A
Emulsion
B
Aerosols
C
Foam
D
Sol
Solution:

Emulsion is a colloidal solution formed between two liquids.

Aerosol is a colloid which contains particles of liquid or solid dispersed in gas.

Foam is a colloid formed between gas particles and liquid or solid particles.

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