Q.

Which of the following is used in the extraction of gold

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a

F2

b

Cl2

c

Br2

d

I2

answer is B.

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Detailed Solution

Cl2 is used in the extraction of gold .Cl2​ reacts with metals to form chlorides Au is extracted from AuCl3​so Cl2​ is used
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Which of the following is used in the extraction of gold