1.

Assertion : Hydrometallurgy involves dissolving the ore in a suitable reagent followed by precipitation by a more electropositive metal. Reason: Copper is extracted by hydrometallurgy.

Answer»

Both ASSERTION and REASON are true and reason is the correct explanation of assertion. 
Both assertion and reason are true but reason is not the correct explanation of assertion. 
Assertion is true but reason is false. 
Assertion is false but reason is true. 

Solution :In this PROCESS, salts of metal are DISSOLVED in suitable solvent LIKE water followed by reduction with more electropositive elements.


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