Question

Assertion: Hydrometallurgy involves dissolving the ore in a suitable reagent followed by precipitation by a more electropositive metal.

Reason: Copper is extracted by hydrometallurgy.

• A. Both assertion and reason are true and reason is the correct explanation of assertion.
• B. Assertion is true but reason is false.
• C. Assertion is false but reason is true.
• D. Assertion and reason both are wrong.
• E. Both assertion and reason are true but reason is not the correct explanation of assertion.

Answer 1

The correct option is E Both assertion and reason are true but reason is not the correct explanation of assertion.

$\text{Analysing assertion}$

Hydrometallurgy involves dissolving the ore in a suitable reagent (like water, dilute acids or sodium cyanide solution) followed by precipitation by a more electropositive metal.

So, it is used for extraction of less electropositive metals like copper, silver, gold.

So, the assertion is correct.

$\text{Analysing reason}$

Copper is extracted by hydrometallurgy.

So, reason is also correct but it is not the explanation of assertion.

Both assertion and reason are true and reason is not the correct explanation of assertion.