JEE Main Chemistry question

Red phosphorus can be obtained from white phosphorus by

(A)Heating it in an inert atmosphere, away from lightCorrect
(B)Distilling it in an inert atmosphere
(C)Dissolving it in and crystallising
(D)Melting it and pouring the liquid into water

Answer: (A)

Solution

White phosphorus converts to the polymeric, less reactive red phosphorus when heated to about 573 K in an inert atmosphere (nitrogen) in the absence of light, a process that avoids combustion of the highly reactive white form. Distillation and

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Question ID VK-145608