Materials and Construction MCQs

Question 1

Molybdenum steels containing 0.15 to 0.40% molybdenum

Accepted Answer

Are used for automobile parts like gears, axle, shaft, bearings etc

Answer

Are prone to temper brittleness

Answer

Have very poor fatigue resistance

Answer

Do not contain nickel or chromium or both

Question 2

Which one is remelted and poured into moulds to get cast iron?

Accepted Answer

Pig iron

Answer

Wrought iron

Answer

Low carbon steel

Answer

Mild steel

Question 3

Reactor used in the production of polyvinyl chloride (PVC) is made of

Accepted Answer

Nickel or glass lined steel

Answer

Aluminium

Answer

Tantalum

Answer

Lead

Question 4

Soap kettle used in the production of laundry soap is made of

Accepted Answer

Steel with top section nickel clad or stainless steel

Answer

Cast iron

Answer

Nickel

Answer

Concrete

Question 5

In the Kraft process of sulphate paper pulp manufacture, the black liquor and the white liquor storage tank is made of

Accepted Answer

Steel

Answer

Concrete

Answer

Wood

Answer

Porcelain

Question 6

Cast iron is a __________ material.

Accepted Answer

Brittle

Answer

Ductile

Answer

Tough

Answer

Malleable

Question 7

Iron rust is

Accepted Answer

Hydrated ferric oxide

Answer

Ferrous oxide

Answer

Powdered iron

Answer

Ferric sulphide

Question 8

Which of the following is a low melting point metal?

Accepted Answer

Tin

Answer

Stainless steel

Answer

Wrought iron

Answer

Copper

Question 9

Visco-elastic behaviour of materials which is time dependent is common in

Accepted Answer

Non-crystalline organic polymer

Answer

Plastics

Answer

Crystalline solid

Answer

Non-crystalline solids