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Chemistry of Ores and Metals


19. 

The galvanised iron pipes are coated with

Answer : D. zinc

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20. 

Galvanised iron sheets are protected from rusting due to the presence of a layer of

Answer : C. zinc

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21. 

The constituent of bronze

Answer : D. Copper and Tin

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22. 

Which one of the following materials is very hard and ductile?

Answer : B. Tungston

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23. 

Which one of the following iron alloys crack easily?

Answer : B. Cast Iron

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24. 

Which one of the following is the purest form of iron?

Answer : D. Wrought iron

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