Question

Which of the following will show “Tyndall effect"? How can you demonstrate Tyndall
effect in them? (AS,,AS,)
(a) Salt solution (b) Milk (c) Copper sulphate solution (d) Starch solution.​

Answer 1

Answer:

In the above question, only b) milk and d) starch solution show Tyndall effect as they are colloids. a) salt solution and c) copper sulphate solution are solutions and therefore don't show Tyndall effect.

Answer 2

Answer:

Milk shows Tyndall effect.

Demonstration:

1) Prepare the milk, copper sulphate, salt and starch solutions in different beakers.

2) Allow a beam of light through each of them.

3) The path of the light beam is clearly visible to us through milk.

4) The path of the light beam is not visible through remaining.

5) This experiment will be effective if it is performed in a darkroom.

Explanation:

So, hence, related to the above question, option "B" is the correct answer/option.

Because, except only milk show Tyndall effect as they are colloids, remaining a) Salt solution, c) Copper sulphate solution and d) Starch solution are solutions and therefore they don't show Tyndall effect.

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