Question

why copper sulphate solution does not show tyndall effect but solution of milk&water shows?

Answer 1

copper sulphate solution is a true solution therefore it does not shows any Tyndall effect but since combination of milk and water is a colloid therefore it shows Tyndall effect.
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Answer 2

Answer:

Explanation:

The particles of copper sulphate solution is smaller so that they cannot pass light and show Tyndall effect whereas the particles of milk are bigger to penetrate light through it and can show Tyndall effect