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प्रश्न
Manganese is used to make which ore tough and resistant to rusting?
विकल्प
copper
mica
bauxite
iron
MCQ
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उत्तर
Iron
Explanation:
Manganese is used to make iron tough and resistant to rusting. It hardens steel and removes impurities, thus improving the quality of iron and steel and making them more durable and rust-resistant.
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