Which of the following statemetnt is not...

Which of the following statemetnt is not correct for leaching?

A

Ore shoule be soluble in a suitable solvent

B

It is done for low grade ores.

C

Leaching of `Al_(2)O_(3)` from bauxite is based on amphoteric nature of bauxite.

D

None of these

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The correct Answer is:

D

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