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Which of the following is used to reduce the metal complexes obtained during leaching process?

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in Chemistry – Class 12 by (188k points)
Which of the following is used to reduce the metal complexes obtained during leaching process?

(a) Tellurium

(b) Antimony

(c) Zinc

(d) Selenium

This question was addressed to me in an internship interview.

The question is from Oxidation Reduction in section General Principles and Processes of Isolation of Elements of Chemistry – Class 12

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The correct answer is (c) Zinc

Explanation: To obtain the metals from their metal complexes, they are made to undergo a reduction process wherein the metal in the complex is displaced by a more electropositive metal. Zinc is used to reduce these complexes as it is a metal with higher electro positivity than gold and silver.

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