To separate a mixture containing iodine, ammonium chloride and sand which sequence of methods should be followed? -

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Sublimation, addition of

H_{2} O

, filtration

Evaporation, distillation, crystallisation

Addition of

{CCl}_{4}

, filtration, sublimation

Sublimation, addition of

{CCl}_{4}

answer is B.

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Detailed Solution

Addition of

{CCl}_{4}

, filtration, sublimation : these methods should be followed respectively to separate a mixture containing iodine, ammonium chloride and sand.
Iodine dissolves in

{CCl}_{4}

. Hence addition of

{CCl}_{4}

leads to the separation of iodine after filtration of the whole solution. Ammonium chloride and sand remain unchanged. Ammonium chloride sublimes and thus can be separated from sand by the process of sublimation. This is the easiest process of separation.

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