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Electrometallurgy

Assertion :Go...

Question

Assertion :Gold chloride $(A u C l_{3})$ solution cannot be stored in a vessel made of copper, iron, nickel, chromium, zinc or tin. Reason: Gold is very precious metal.

A

Both Assertion and Reason are correct and Reason is the correct explanation for Assertion

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B

Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion

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C

Assertion is correct but Reason is incorrect

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D

Assertion is incorrect but Reason is correct

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Solution

The correct option is B Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
Gold have higher reduction potentail and whenever gold chloride solution is placed in copper, iron, zinc, or tin very reactive then electrochemical cell formed and reduction of gold takes place and active metals easily displace gold from its solution;
gold is a very precios matal;
hence, reason is not the correct explanation for assertion.

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