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प्रश्न
Name the earliest metal used by man because it is malleable.
विकल्प
Iron
Manganese
Bauxite
Copper
MCQ
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उत्तर
Copper
Explanation:
Copper occurs in native (metallic) form and is highly malleable and ductile, so early humans could hammer and shape it into tools and ornaments without complex smelting. This made copper the earliest metal widely used.
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