Question

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Q.17 Why copper sulphate solution in water does not show Tyndall effect, but mixture of water and
milk shows?
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Answer 1

Copper sulphate solution in water does not show tyndall effect the particles of solution are very small to be abke to make the light path visibke whereas a milk is a colloid whise particle size is big enough to scatter a beam of light and make the path visible.