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Which of the following statements are co...

Which of the following statements are correct ?

A

Quenched steel is produced by heating steel to redness and allowing it to cool slowly.

B

Stainless steel is produced by heating wrought iron in molten chromium.

C

The process hard coating of iron nitride on the surface of steel is called nitriding.

D

The process of producing a thin coating of hardened steel on the surface of mild steel is called hardening.

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The correct Answer is:
C, D
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  3. Which of the following statements are correct ?

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  4. Which of the following statement is/are correct?

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  5. Point out the incorrect statement among the following?

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  7. In the extraction of chlorine from brine

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  8. Which of the following is/are correctly matched?

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  9. In which of the following pair(s) the minerals are converted in to met...

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  10. The reaction (s) which does (do) not occur in the reduction zone in th...

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  11. Cassiterite ore (SnO(2)) is purified by

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  12. Which of the following statements(s) is (are) true?

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  13. Why lime stone is added in the extraction of lead from galena ?

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  14. The major role of fluorpar (CaF2 ) which added in small quantities in ...

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  15. Which of the following statement(s) is /are correct?

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  17. Which of the following common element(s) is/are present in the anode m...

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  20. The reaction (s) which does (do) not occur in the reduction zone in th...

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