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प्रश्न
Which of the following alloys does not contain copper?
विकल्प
Bronze
Invar
German silver
Brass
MCQ
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उत्तर
Invar
Explanation:
Invar consists only of iron (64%) and nickel (36%). Bronze, Brass, and German silver all contain copper as a major component.
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अध्याय 7: Metallurgy - Intext Question [पृष्ठ १५३]
