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Depression in Freezing Point

Sulphides ore...

Question

Sulphides ores of metals are usually concentrated by Froth Flotation process. Which one of the following sulphides ores offers an exception and is concentrated by chemical leaching?

A

Sphalerite

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B

Argentite

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C

Galena

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D

Copper pyrite

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Solution

The correct option is B
Argentite

Argentite ore is leached with NaCN during extraction of silver in the MacArthur-Forrest Cyanide process.

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