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State which of the following solutions e...

State which of the following solutions exhibit Tyndall effect :
Starch solution, Sodium chloride solution, Tincture of iodine, Air.

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(i) Tyndall effect is shown both by starch solution and air which are heterogeneous mixtures and have the capacity to scatter beam of light as it passes through them.
(ii) Sodium chloride solution and tincture of iodine (iodine crystals dissolved in thyl alcohol) are both homogeneous in nature and donot exhibit any Tyndall effect.
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