Assertion :A colloidal solution scatters light but a true solution does not. Reason: The particles in a colloidal solution move slowly than in a true solution.

Assertion and reason both are correct statements and reason is correct explanation for assertion.

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Assertion and reason both are correct statements but reason is not correct explanation for assertion.

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Assertion is correct statement but reason is wrong statement.

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Assertion is wrong statement but reason is correct statement.

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Solution

The correct option is B Assertion and reason both are correct statements but reason is not correct explanation for assertion.
A colloidal solution shows Tyndall effect (scattering of light) while a true solution does not. This is not related to the fact that its particles move slowly than in a true solution. Tyndall effect happens because the particles in the colloid are big enough to scatter the beam of light passing through it, thus making its path visible.

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