Question

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Answer 1

Answer:

(A)

The milk solution is a colloidal solution. As soon as the light is passed through such a solution, the particles start scattering light.

Phenomena involved : Tyndall Effect

(B)

A salt solution is a solution. The particles of such a solution do not scatter light, thus, light simply passes through it and does not scatter light.

(C)

Examples: Cream, butter, paper, glass

___________

Answer 2

Answer:

1) since, milk is colloid and when light scattered from the particles of colloids , it is illuminated, thus light was illuminated when passed through the milk. This is known as tyndall effect.

Explanation:

2) for scattering of light the size of particles should be large enough .Since the particles of solution are not enough to scattered the beam of light, hence same result were not observed .

3) soap bubbles and fog are the colloids ,hence same effect i.e. scattering of light is shown by these. This is known as tyndall effect.

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