Question

Explain: (i) Zone refining (ii) Column n chromatography

Answer 1

1. a method of purifying a crystalline solid, typically a semiconductor or metal, by causing a narrow molten zone to travel slowly along an otherwise solid rod or bar to one end, at which impurities become concentrated.

2. Column chromatography in chemistry is a chromatography method used to isolate a single chemical compound from a mixture. ... A thin-layer chromatograph can show how a mixture of compounds will behave when purified by column chromatography.

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