Question

Which of the following will show tyndall effect why? a)salt solution b)milk c)copper sulphate solution d)starch solution

Answer 1

Milk and starch solution will show tyndall effect because they are colloids.

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.

A colloid is not a true solution.

The scattering of light by colloidal particle is known as tyndall effect.
The scattering of light by Colloidal Solutions tells us that the colloidal particles are much bigger than the particles of a true solution.

True solution does not scatter a beam of light passing through it but a Colloidal solutions scatters a beam of light passing through it.

Colloids are heterogeneous in nature though they appear to be homogeneous.

==================================================================

Hope this will help you....

Answer 2

Answer: (b) and (d) Milk and starch solution exhibits Tyndall effect

Explanation:

• The Tyndall effect is  an effect in which the particles present in the colloids gets scattered with the rays of light which directs them.
• In all colloidal solutions and in suspensions Tyndall effect is exhibited.
• In colloids it is confirmed that tyndall effect is shown.
• The scattered light density will depend on the colloid particles and the incident light frequency.
• Various examples include Colloid containing  fat and protein globules.
• In milk solution the reflected light is spread when a beam of incident light is directed at a glass of milk.
• The direction of the light is clearly evident as we focus a torch is turned on in a foggy atmosphere.

#SPJ6