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Question

Volatile and non-volatile components of a solid-solid mixture can be separated by ____________.


A

evaporation

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B

sublimation

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C

boiling

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D

centrifugation

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Solution

The correct option is B

sublimation


Sublimation is defined as the transition of a substance directly from the solid state to the gaseous state without going through the intermediate liquid state.

The volatile component can be separated from the non-volatile one by the process of sublimation.

Example:- As a mixture of ammonium chloride and sodium chloride is heated in an inverted funnel, ammonium chloride starts to sublime as it is volatile. The fumes of ammonium chloride deposit on the walls of the inverted flask in its solid form, separating it from the solid sodium chloride that is left behind.


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