A suspension of chalk in water is prepared

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By placing powdered chalk in water and then vigorously shaking it

By placing a piece of chalk in cold water

By placing powder chalk in dilute hydrochloric acid

By placing a piece of chalk in hot water

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Detailed Solution

By placing powdered chalk in water and then vigorously shaking it you will prepare a suspension of chalk in water.
Suspension is a heterogeneous mixture. When we add powdered chalk to water and after stirring it vigorously we get a suspension. Shaking is done to make a uniform distribution for some time. Suspension shows the Tyndall effect. An example of suspension is the sand solution.

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