Which of the following will show Tyndall effect? Why ?

(a) Salt solution

(b) Milk

(c) Copper sulphate solution

(d) Starch solution.

Ans. Milk and starch solution will show Tyndall effect. Because these both contain colloidal particles which cannot be seen with naked eye but big enough to scatter a beam of light which is known as Tyndall effect.

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