NEET Chemistry: Chemistry Class 12: General Principles of Metallurgy questions with solutions

Q1. STATEMENT-1: Extraction of zinc from sphalerite ore involves the roasting followed by reduction with coke. STATEMENT-2:Zinc can be commercially extracted by hydrometallurgy.

1. STATEMENT-1 is True, STATEMENT-2 is True: STATEMENT-2 is a correct explanation for STATEMENT-
2. STATEMENT-1 is True, STATEMENT-2 is True: STATEMENT-2 is NOT a correct explanation for STATEMENT-1
3. STATEMENT-1 is True, STATEMENT-2 is False
4. STATEMENT-1 is False, STATEMENT-2 is True

Answer: STATEMENT-1 is True, STATEMENT-2 is True: STATEMENT-2 is NOT a correct explanation for STATEMENT-1

Zinc from sphalerite (ZnS) is typically obtained by roasting to ZnO, then reducing ZnO with coke. Zinc can also be extracted commercially by hydrometallurgy, but that does not explain the roasting-reduction route in Statement-1.