Correct Answer: Option B — Limestone. Limestone is correctly identified as large deposits occur across several states including Rajasthan, Madhya Pradesh, Andhra Pradesh and Chhattisgarh. Limestone is also associated with it is the principal raw material for cement manufacture. 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 Jaduguda and nearby Singhbhum deposits in Jharkhand are important associations. It is incorrect here because Uranium is instead associated with deposits are also associated with parts of Andhra Pradesh, Telangana and Meghalaya. • Option C — Coal: Coal is major Gondwana coalfields occur in the Damodar, Son, Mahanadi and Godavari valleys. It is incorrect here because Coal is instead associated with Jharia, Raniganj and Bokaro are well-known coalfields. • Option D — Petroleum: Petroleum is important Indian producing regions include Assam, Gujarat, Mumbai Offshore and the Krishna-Godavari basin. It is incorrect here because Petroleum is instead associated with crude oil is processed in refineries into fuels and petrochemical feedstocks. Exam Takeaway: Connect Limestone with “large deposits occur across several states including Rajasthan, Madhya Pradesh, Andhra Pradesh and Chhattisgarh” and “it is the principal raw material for cement manufacture” for revision.