Engineering Materials MCQs

Question 1

Normalising of steel is done to

Accepted Answer

All of the above

Answer

Refine the grain structure

Answer

Remove strains caused by cold working

Answer

Remove dislocations caused in the internal structure due to hot working

Question 2

Hardness of steel depends on

Accepted Answer

Amount of carbon it contains

Answer

The shape and distribution of the carbides in iron

Answer

Method of fabrication

Answer

Contents of alloying elements

Question 3

The coordination number of a face centered cubic space lattice is

Accepted Answer

Twelve

Answer

Six

Answer

Eighteen

Answer

Twenty

Question 4

The composition of silver solder is

Accepted Answer

Silver, copper, zinc

Answer

Silver, tin, nickel

Answer

Silver, lead, zinc

Answer

Silver, copper, aluminium

Question 5

Materials after cold working are subjected to following process to relieve stresses

Accepted Answer

Annealing

Answer

Hot working

Answer

Tempering

Answer

Normalizing

Question 6

Argentite is the principal ore or raw material for

Accepted Answer

Silver

Answer

Aluminium

Answer

Tin

Answer

Zinc

Question 7

Melting point of iron is

Accepted Answer

1539°C

Answer

1601°C

Answer

1489°C

Answer

1712°C

Question 8

The metallic structure of mild steel is

Accepted Answer

Body centered cubic

Answer

Face centered cubic

Answer

Hexagonal close packed

Answer

Cubic structure

Question 9

The basic constituents of Hastelloy are

Accepted Answer

Nickel, molybdenum etc.

Answer

Aluminium, copper etc.

Answer

Nickel, Copper, etc.

Answer

All of the above