Which Indian mineral resource term is correctly associated with important geographical fact “it is also used as a flux in iron and steel processing”, and also with “a sedimentary rock composed mainly of calcium carbonate minerals”?

Correct Answer: Option D — Limestone. Limestone is correctly identified as it is also used as a flux in iron and steel processing. Limestone is also associated with a sedimentary rock composed mainly of calcium carbonate minerals. Another identifying fact about Limestone is that it is the principal raw material for cement manufacture. A further exam-relevant fact about Limestone is that it is also used as a flux in iron and steel processing. Why the other options are incorrect: • Option A — Uranium: Uranium is ore processing produces uranium concentrate for the nuclear-fuel cycle. It is incorrect here because Uranium is instead associated with a radioactive mineral resource used as nuclear fuel. • Option B — Coal: Coal is it is widely used in thermal power generation and metallurgical industries. It is incorrect here because Coal is instead associated with a combustible sedimentary energy resource. • Option C — Petroleum: Petroleum is anticlines, faults and porous reservoir rocks can form hydrocarbon traps. It is incorrect here because Petroleum is instead associated with a liquid fossil fuel accumulated in sedimentary basins. Exam Takeaway: Connect Limestone with “it is also used as a flux in iron and steel processing” and “a sedimentary rock composed mainly of calcium carbonate minerals” for revision.