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Which of the following compound is used in the extraction of gold mining?

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in Environmental Biotechnology by (64.7k points)
Which of the following compound is used in the extraction of gold mining?

(a) Liquid Nitrogen

(b) Cyanide

(c) Oxygen

(d) Ammonia

I had been asked this question during an internship interview.

Origin of the question is Management of Mine Waste Soil topic in section Management and Remediation of Problem Soil of Environmental Biotechnology

1 Answer

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Best answer
Right answer is (b) Cyanide

Easy explanation: Cyanide is used in the extraction in gold mining to separate the gold from the unwanted and uneconomic materials whereas,  Liquid Nitrogen is used to break the cell walls of a cell, and Oxygen and ammonia are not used for extraction for gold mining .

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