Which among the following is a non-metallic mineral?
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Vanadium
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Corundum
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Beryllium
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Zirconium
B
Correct answer
Explanation
Corundum is an aluminum oxide mineral (Al2O3) classified as a non-metallic mineral. It's used as an abrasive and in gemstones (ruby, sapphire). Vanadium, Beryllium, and Zirconium are metallic elements extracted from their ores. The question asks specifically for a non-metallic mineral.