Materials and Construction MCQs

Question 1

Which of the following crystal structures characterises the ferritic stainless steel?

Accepted Answer

Body centred cubic

Answer

Face centred cubic

Answer

Simple hexagonal

Answer

None of these

Question 2

__________ is used for determining the tensile strength of steels.

Accepted Answer

Universal testing machine

Answer

Hydraulic press

Answer

Mechanical press

Answer

None of these

Question 3

Very high sulphur in pig iron makes

Accepted Answer

Its casting unsound

Answer

Its hard and machinable

Answer

Its brittle and malleable

Answer

All of the above

Question 4

Which of the following has the highest compressive strength?

Accepted Answer

High carbon steel

Answer

Wrought iron

Answer

Cast iron

Answer

Mild steel

Question 5

The range of Mho's scale of hardness is from

Accepted Answer

1 to 10

Answer

1 to 15

Answer

1 to 8

Answer

0 to 10

Question 6

Purity of electrical grade aluminium should be ≥ __________ percent.

Accepted Answer

99.5

Answer

95

Answer

85

Answer

90

Question 7

Which is an amorphous material?

Accepted Answer

Glass

Answer

Mica

Answer

Brass

Answer

Cast iron

Question 8

Pick out the correct statement.

Accepted Answer

Hardening of a soft metal can be done by alloying it with another metal or non-metal

Answer

Stainless steel is nothing but chromium coated steel

Answer

Plastic deformation of a material is its temporary distortion under the action of applied stress

Answer

Rusting of iron is not electrochemical in nature

Question 9

Plate and frame filter press is usually made of

Accepted Answer

Cast iron

Answer

Mild steel

Answer

Stainless steel

Answer

Galvanised iron