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Tempering of steel...

Tempering of steel

A

Increases mechanical strength

B

Changes ration of iron in steel

C

Involves heating the steel to appropriate temperature and then cooling it rapidly

D

Decreases mechanical strength

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The correct Answer is:
A, C
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CENGAGE CHEMISTRY-GENERAL PRINCIPLES AND PROCESS OF ISOLATION OF ELEMENTS-Exercise (Multiple Correct)
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  7. Select the correct statements for Ellingham diagram.

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  8. Which of the following statements is/are correct ?

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  11. Disadvantages of using carbon as a reducing agent :

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  12. Select the correct statements :

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  18. Select the correct statements (Ellingham diagram) :

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  19. Select the correct statements for Ellingham diagram.

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  20. The extraction of metals from sulphide ore involves

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