11. In grey cast iron, carbon is present in the form of
12. In malleable iron, carbon is present in the form of
13. Nodular iron has
14. Nickel in steel
15. Dislocations in materials refer to the following type of defect
16. The main alloying elements high speed steel in order of increasing proportion are
17. Induction hardening is basically a
18. Which of the following is not the correct method of increasing fatigue limit?
19. The property of a material which enables it to retain the deformation permanently, is called
20. The brown smoke during the operation of a Bessemer converter indicates that the
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