With reference to the mineral resources of India, consider the following pairs : Mineral - 90% Natural sources in 1. Copper - Jharkhand 2. Nickel - Orissa 3. Tungsten - Kerala Which of the pairs given above is/are correctly matched ?

1. Pair 1: Copper - While Jharkhand has significant copper deposits (part of the Singhbhum copper belt), the state with the largest reserves is typically Rajasthan (Khetri belt), followed by Madhya Pradesh (Malanjkhand). No single state holds 90% of India's copper reserves. Thus, Pair 1 is incorrect. 2. Pair 2: Nickel - The vast majority (over 90%) of India's nickel ore reserves are located in the state of Orissa (now Odisha), particularly in the Sukinda valley chromite deposits where it occurs as nickeliferous limonite. Thus, Pair 2 is correct. 3. Pair 3: Tungsten - The primary reserves of tungsten in India are found in Rajasthan (Degana), West Bengal, Andhra Pradesh, and Maharashtra. Kerala is not a significant source of tungsten; its main mineral resources include heavy mineral sands (ilmenite, rutile, zircon, monazite). Thus, Pair 3 is incorrect. 4. Only Pair 2 is correctly matched.