Multiple choice Which one of the following is not correctly matched? Graphite-orissa Copper -Rajasthan Gold-Karnataka Iron Ore-Bihar Reveal answer Fill a bubble to check yourself D Correct answer Explanation Iron ore is primarily mined in states like Odisha, Chhattisgarh, and Karnataka, not Bihar. The other pairings (Graphite in Odisha, Copper in Rajasthan, Gold in Karnataka) are generally correct in the context of Indian mineral geography.