Ncert Exercises & Solutions

Select the correct option based on statements below:

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

1.	Both (A) and (R) are true and (R) is the correct explanation of (A).
2.	Both (A) and (R) are true but (R) is not the correct explanation of (A).
3.	(A) is true but (R) is false.
4.	(A) is false but (R) is true.

Hint: Hydrometallurgy is a chemical metallurgy method that conducts separation and extraction of metals based on the reaction in an aqueous medium.

Hydrometallurgy involves dissolving the ore in a suitable reagent followed by precipitation with the help of more electropositive

metal in which pure metal is get replaced by more electropositive metal.

Copper is extracted by using hydrometallurgy.

Hence, both assertion and reason are true but the reason is not the correct explanation of assertion.