Engineering Materials MCQs

Question 1

A cold chisel is made of

Accepted Answer

High carbon

Answer

Mild steel

Answer

Cast iron

Answer

H.S.S.

Question 2

Cast iron is characterized by minimum of following percentage of carbon

Accepted Answer

2%

Answer

0.2%

Answer

0.8%

Answer

1.3%

Question 3

Eutectoid steel contains following percentage of carbon

Accepted Answer

0.8%

Answer

0.02%

Answer

0.3%

Answer

0.63%

Question 4

Cast iron is a

Accepted Answer

Brittle material

Answer

Ductile material

Answer

Malleable material

Answer

Tough material

Question 5

Cast iron has

Accepted Answer

Its elastic limit close to the ultimate breaking strength

Answer

High tensile strength

Answer

High ductility

Answer

All of the above

Question 6

Carbon steel is

Accepted Answer

An alloy of iron and carbon with varying quantities of phosphorus and sulphur

Answer

Made by adding carbon in steel

Answer

Refined from cast iron

Answer

Extensively used for making cutting tools

Question 7

High carbon steel carries carbon percentage

Accepted Answer

0.8 to 1.5%

Answer

0.1 to 0.3%

Answer

0.3 to 0.6%

Answer

0.6 to 0.8%

Question 8

According to Indian standard specifications, plain carbon steel designated by 40 C8 means that the carbon content is

Accepted Answer

0.35 to 0.45%

Answer

0.04%

Answer

0.4 to 0.6%

Answer

0.6 to 0.8%

Question 9

Recrystallization temperature can be lowered by

Accepted Answer

All of the above

Answer

Purification of metal

Answer

Grain refinement

Answer

Working at lower temperature