Which one of following is not a method of concentration of metals?

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General Principles and processes of Isolation of Elements

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Which one of the following is not a method of concentration of metals?

A

gravity separation

B

froth floating process

C

electromagnetic separation

D

smelting

Solution

Smelting is not a method of concentration of metals.

Smelting is a process of extraction of metal in its molten state by any reducing agent in the presence of flux.

For example: oxides of less electropositive metals like $Pb , Zn , Fe , Cu$ are reduced by any other reducing agents.

Standard 12

Chemistry

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(NEET-2015)