- (A) 3- 5
- (B) 5-7
- (C) 7-10
- (D) 10-15
- (E) 15-22
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- (A) cast iron
- (B) pig iron
- (C) wrought iron
- (D) malleable iron
- (E) white iron
- (A) manganese
- (B) magnesium
- (C) nickel
- (D) silicon
- (E) none of the above
- (A) contains 1.7 to 3.5% carbon in free state and is obtained by the slow cooling of molten cast iron
- (B) is also known as chilled cast iron and is obtained by cooling rapidly. It is almost unmachinable
- (C) is produced by annealing process. It is soft, tough and easily machined metal
- (D) is produced by small additions of magnesium (or creium) in the ladle. Graphite is in nodular or spheroidal form and is well dispersed throughout the material
- (E) none of the above
- (A) cold rolled steel
- (B) hot rolled steel
- (C) forged steel
- (D) cast steel
- (E) carbon-chrome steel
- (A) 0.2%
- (B) 0.5%
- (C) 0.8%
- (D) 1.0%
- (E) 1.5%.
- (A) 0.1 to 0.2%
- (B) 0.25 to 0.5%
- (C) 0.6 to 0.7%
- (D) 0.7 to 0.9%
- (E) 1.0 to 1.2%.
- (A) brittle
- (B) hard
- (C) ductile
- (D) tough
- (E) malleable
- (A) copper
- (B) brass
- (C) lead
- (D) silver
- (E) aluminium
- (A) silver, copper, zinc
- (B) silver, tin, nickel
- (C) silver, lead, zinc
- (D) silver, copper, aluminium
- (E) silver, lead, tin
