In nitriding process of steel [MP PET/PMT 1988; CBSE 1989]

1.	In nitriding process of steel [MP PET/PMT 1988; CBSE 1989]
A.	Steel is heated in an atmosphere of ammonia
B.	Steel is made red hot and then cooled
C.	Steel is made red hot and then plunged into oil for cooling
D.	None of these
Answer» B. Steel is made red hot and then cooled

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In nitriding process of steel [MP PET/PMT 1988; CBSE 1989]

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