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Assertion : Zinc is used for the recover...

Assertion : Zinc is used for the recovery of silver from the complex `[Ag(CN)_(2)]^(-)`
Reason : Zinc is more electropositive than silver and is a better reducing agent.

A

Both assertion and reason are correct statements, and reason is the correct explanation of the assertion.

B

Both assertion and reason are correct statements, but reason is not the correct explanation of the assertion.

C

Assertion is correct, but reason is wrong statement.

D

Assertion is wrong, but reason is correct statement.

Text Solution

Verified by Experts

The correct Answer is:
A
Reason is the correct explanation for Assertion.
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Why is Zn but not copper used for the recovery of Ag from its cyanide complex [Ag(CN)_(2)]^(-)

STATEMENT-1 : Zince and not copper is used in the recovery of silver from the complex [Ag(CN)_(2)]^(-) and STATEMENT-2 : Zince is more powerful oxidising agent than copper.

Answer the following questions briefly. (i) What is the actual reducing agent of haematite in blast furnace ? (ii) Give the equations for the recovery of lead from galena by air reduction. (iii) Why is sodium chloride added during electrolysis of fused anhydrous magnesium chloride. (iv) Zinc, not copper, is used for the recovery of metallic silver from the complex [Ag(CN)_(2)] . Explain. (v) Why is chalcocite roasted and not calcinated during recovery of copper ?