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Question

Red phosphorus can be prepared from white phosphorus by:

A
Heating it in an inert atmosphere for several days
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B
Distilling it in inert atmosphere
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C
Dissolving it in carbon disulphide and crystallising
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D
Melting it and pouring the liquid into water
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Solution

The correct option is A Heating it in an inert atmosphere for several days
Red phosphorus is obtained by heating white phosphorus at 573 K in an inert atmosphere for several days.

White phosphorusΔ−−−−−−Several daysRed phosphorus

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