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?

The correct answer is Option 2 (2 only). This is based on the distribution of mineral reserves as per the Indian Bureau of Mines (IBM).

• Pair 1 is incorrect: While Jharkhand is a significant producer of Copper (Singhbum belt), it does not hold 90% of India's resources. Rajasthan possesses the largest share (about 54%) of copper ore reserves, followed by Madhya Pradesh and Jharkhand.
• Pair 2 is correct: Odisha (formerly Orissa) dominates India's Nickel resources. It accounts for approximately 92-93% of the country's total nickel ore resources, primarily located in the Sukinda valley of Jajpur district.
• Pair 3 is incorrect: Kerala is not a major source of Tungsten. The largest resources of Tungsten in India are found in Karnataka (42%), followed by Rajasthan (27%) and Andhra Pradesh (18%). Major deposits include Degana in Rajasthan and Chellagurki in Karnataka.

Thus, only the second pair accurately reflects the 90% concentration threshold in the specified state.