A. ferrite and cementite
B. cementite and gamma iron
C. ferrite and austenite
D. ferrite and iron graphite
E. pearlite and ferrite
A. contains l.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 cerium) in the ladle. Graphite is in the nodular or spheroidal form and is well dispersed throughout the material
E. none of the above
A. ability to undergo large permanent deformations in compression
B. ability to recover its original form
C. ability to undergo large permanent deformations in tension
D. all of the above
E. none of the above
A. 0.02%
B. 0.3%
C. 0.63%
D. 0.8%
E. 1.2%.
A. 63 to 67% nickel and 30% copper
B. 88% copper, 10% tin and rest zinc
C. alloy of tin, lead and cadmium
D. iron scrap and zinc
E. none of the above
[B].
[C].
[D].
Answer: Option A
Explanation:
No answer description available for this question.
A. silver and some impurities
B. refined silver
C. nickel, copper and zinc
D. nickel and copper
E. silver and gold