Correct Answer: Option A — Copper Ore. Copper Ore is correctly identified as a metallic resource valued for electrical conductivity and ductility. Copper Ore is also associated with Khetri in Rajasthan, Malanjkhand in Madhya Pradesh and Singhbhum in Jharkhand are important associations. Another identifying fact about Copper Ore is that chalcopyrite is a common copper-bearing sulphide mineral. A further exam-relevant fact about Copper Ore is that copper is used in electrical equipment, alloys and construction. Why the other options are incorrect: • Option B — Limestone: Limestone is a sedimentary rock composed mainly of calcium carbonate minerals. It is incorrect here because Limestone is instead associated with large deposits occur across several states including Rajasthan, Madhya Pradesh, Andhra Pradesh and Chhattisgarh. • Option C — Uranium: Uranium is a radioactive mineral resource used as nuclear fuel. It is incorrect here because Uranium is instead associated with Jaduguda and nearby Singhbhum deposits in Jharkhand are important associations. • Option D — Coal: Coal is a combustible sedimentary energy resource. It is incorrect here because Coal is instead associated with major Gondwana coalfields occur in the Damodar, Son, Mahanadi and Godavari valleys. Exam Takeaway: Connect Copper Ore with “a metallic resource valued for electrical conductivity and ductility” and “Khetri in Rajasthan, Malanjkhand in Madhya Pradesh and Singhbhum in Jharkhand are important associations” for revision.