41. |
The alloy, mainly used for corrosion resistance in stainless steels is
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Answer:
Option (d) |
42. |
An alloy steel which is work hardenable and which is used to make the blades of bulldozers, bucket wheel excavators and other earth moving equipment contain iron, carbon and
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Answer:
Option (c) |
43. |
The alloying element which increases residual magnetism and coercive magnetic force in steel for magnets is
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Answer:
Option (d) |
44. |
The machinability of steel is improved by adding
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Answer:
Option (d) |
45. |
Chromium when added to steel __________ the tensile strength.
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Answer:
Option (c) |
46. |
A small percentage of boron is added to steel in order to
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Answer:
Option (a) |
47. |
The alloying element which increases residual magnetism and coercive magnetic force in steel for magnets is
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Answer:
Option (d) |
48. |
The hardness of steel increases if it contains
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Answer:
Option (c) |
49. |
The presence of hydrogen in steel causes
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Answer:
Option (c) |
50. |
The alloying element which can replace tungsten in high speed steels is
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Answer:
Option (d) |