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Which of the following statements is not correct?

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Peptization is the process by which certain substances are converted into the colloidal state.

Metal sol of gold, silver and platinum can be prepared by Bredig's arc method.

Impurities present in a solution makes it more stable.

Dialysis is a process to remove impurities of ions and molecules from a solution.

answer is C.

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Detailed Solution

The melting point of crystalline solids decreases as impurities are added.

This happens as a result of the lattice becoming less stable due to the presence of contaminants.

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