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Engineering Materials

Engineering Materials
Which is false statement about case hardening? Case hardening is done by

Electroplating
Nitriding
Induction hardening
Cyaniding

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Engineering Materials
Shock resistance of steel is increased by adding

Chromium
Sulphur, lead and phosphorus
Nickel and chromium
Nickel

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Engineering Materials
According to Indian standard specifications, plain carbon steel designated by 40 C8 means that the carbon content is

0.4 to 0.6%
0.6 to 0.8%
0.35 to 0.45%
0.0004

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Engineering Materials
Dislocations in materials refer to the following type of defect

Plane defect
Line defect
Volumetric defect
Point defect

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Engineering Materials
In mottled cast iron, carbon is available in

Free form
Nodular form
Combined form
Partly in free and partly in combined state

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Engineering Materials
Large forgings, crank shafts, axles normally contain carbon up to

0.05 to 0.20%
0.55 to 1.0%
0.20 to 0.45%
0.45 to 0.55%

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