Materials and Construction MCQs

Question 1

Most suitable material for high pressure vessel operating at 500 atm. and 500° C is

Accepted Answer

Molybdenum stainless steel

Answer

18/8 stainless steel

Answer

Mild steel

Answer

High silicon iron (14% Si)

Question 2

Titanium metal

Accepted Answer

Is used in oceanographic and space exploration applications

Answer

Exists in three allotropic forms

Answer

Can not be welded

Answer

None of these

Question 3

Ferric stainless steels compared to austenitic stainless steels

Accepted Answer

All of the above

Answer

Have lower corrosion resistance

Answer

Are harder to fabricate

Answer

Are less ductile and hence less suitable for cold pressing

Question 4

Chlorination of benzene is done to produce benzene hexachloride (a pesticide) in a photochemical reactor lined with

Accepted Answer

Lead or glass

Answer

Karbate

Answer

Fireclay bricks

Answer

PVC

Question 5

A measure of toughness of a material is its

Accepted Answer

Yield strength

Answer

Percentage elongation

Answer

Ultimate strength

Answer

Area under stress-strain diagram

Question 6

Which of the following is the most suitable material of construction for evaporator & its tubes for concentrating NaOH solution to 70%?

Accepted Answer

Nickel

Answer

Cast iron

Answer

Steel

Answer

Karbate

Question 7

Which one has the maximum tensile strength out of the following?

Accepted Answer

Nodular cast iron

Answer

Pig iron

Answer

White cast iron

Answer

Grey cast iron

Question 8

Dielectric strength of a material is

Accepted Answer

Its capacity to withstand high voltage

Answer

Its energy stroage capacity

Answer

A magnetic property

Answer

Its capacity to resist the flow of current

Question 9

Corrosion involves exchange of electrons in __________ corrosion.

Accepted Answer

Both A & B

Answer

Chemical

Answer

Electrochemical

Answer

Neither A nor B