1. . Cast Iron is hard and ……… metal.
(A) Tough
(B) Ductile
(C) Brittle
(D) All
2. . The quantity of Carbon in Cast Iron is ………
(A) 3.5%-4.5%
(B) 2.5%-4.5%
(C) 1.5%-4.5%
(D) 0.5%-4.5%
3. . Cast iron is mostly used in ……… work.
(A) Metal
(B) Wood
(C) Casting
(D) None
4. . Mainly ……… are made with cast iron.
(A) Machine components
(B) Plastics
(C) Metal components
(D) All
5. . Before welding ……… is made of joint.
(A) V
(B) U
(C) X
(D) Nothing
6. . For Cast iron welding ……… flame is used.
(A) Neutral
(B) Oxidizing
(C) Carburizing
(D) All
7. . For preheating of small parts ……… is used.
(A) Hammer
(B) Welding torch
(C) Furnace
(D) None
8. . For preheating of larger parts ……… is used.
(A) Hammer
(B) Welding torch
(C) Furnace
(D) None
9. . During welding of Cast Iron flame should not ………
(A) Neutralize
(B) Carburize
(C) Oxidize
(D) None
10. . For Cast iron welding ……… technique should be used.
(A) Forehand
(B) Backhand
(C) Vertical
(D) Flat