1. The process in which the steel components are heated in a bath of molten sodium carbonate is called:
(A) Cyaniding
(B) Nitriding
(C) Normalizing
(D) Carburizing
2. The process which is carried out by heating the steel parts at 1000°F in a gas tight chamber in an atmosphere of ammonia is called:
(A) Cyaniding
(B) Carburizing
(C) Normalizing
(D) Nitriding
3. Flame used for flame hardening is:
(A) Oxyacetylene flame
(B) Coal flame
(C) Wood flame
(D) None of these
4. Maximum temperature for nitriding is:
(A) 100°F
(B) 1000°F
(C) 500°C
(D) 2800°F
5. 20% Barium carbonate is used in:
(A) Pack carburizing
(B) Gas carburizing
(C) Flame hardening
(D) Induction hardening