To solve this problem, we need to understand the terminology used in metallurgy, specifically related to the extraction of metals from ores.
1. Definition of Gangue:
Gangue refers to the earthy or undesired impurities (like sand, mud, etc.) that are present along with the ore. These impurities are not useful and are removed during the process of ore concentration.
2. Understanding Other Options:
(1) Flux – A substance added during smelting to react with gangue and form slag.
(3) Slag – The product formed when gangue reacts with flux.
(4) Mineral – A naturally occurring substance from which metal may or may not be extracted profitably.
3. Conclusion:
The correct term for impurities present in ore is gangue.
Final Answer:
The correct option is (B) Gangue.