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What is a collidal solution

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What is a collidal solution

Posted by Lone Azmat 4 years, 1 month ago

CBSE > Class 09 > Science

1 answers

Gaurav Seth 4 years, 1 month ago

A colloid is a kind of solution in which the size of solute particles is intermediate between those in true solutions and those in suspensions.
For Example: - Soap solution, Milk, Ink, Blood and solutions of synthetic detergents.

In a true solution, the solute particles are so small that they cannot scatter or reflect light rays falling on them.
In a colloidal solution (or colloid), the particles are big enough to scatter light.
If a beam of light is put on a colloidal solution kept in a beaker in a dark room, the path of light beam is illuminated and becomes visible when seen from the side.
The path of light beam becomes visible because colloidal particles are big enough to scatter light falling on them in all directions.

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