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प्रश्न
Tick (√) the correct alternative from the choice given for the following statement:
Copper is not a part of the alloy
विकल्प
brass
bronze
steel
duralumin
उत्तर
steel
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संबंधित प्रश्न
When a mixture of iron powder and sulphur powder is heated strongly to form iron sulphide, then heat energy is :
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