When light is passed through water containing a few drops of milk, it shows a bluish tinge. This is due to the ___ of light by milk and the phenomenon is called _. This indicates that milk is a ___ solution.

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Solution

Tyndall effect: The Tyndall effect is the phenomenon in which the particles in a colloid scatter the beams of light that are directed at them.
All colloidal solutions and some very fine suspensions exhibit this effect.
Whenever a beam of light passes through a colloid, the colloidal particles present in the solution prevent the beam from passing through completely.
The light collides with the colloidal particles and is scattered.
This scattering makes the path of the light beam visible.
Milk is a colloid that contains globules of fat and protein.
So when a beam of light is directed at a glass of water containing milk, the light is scattered which shows a bluish tinge.
Therefore, When light is passed through water containing a few drops of milk, it shows a bluish tinge. This is due to the scattering of light by milk and the phenomenon is called the Tyndall effect. This indicates that milk is a colloidal solution.

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When light is passed through water containing a few drops of milk, it shows a bluish tinge. This is due to the _____ of light by milk and the phenomenon is called _____. This indicates that milk is a _____ solution.

When light is passed through water containing a few drops of milk, it shows a bluish tinge. This is due to the ___ of light by milk and the phenomenon is called _. This indicates that milk is a ___ solution.