Materials and Construction MCQs

Question 1

Polythene (low or high density) containers are not corroded by

Accepted Answer

Sulphuric acid (10%) at room temperature

Answer

Nitric acid (95%) at room temperature

Answer

Sulphur trioxide at 60°C

Answer

Any of these

Question 2

An alloy of iron containing 4% carbon is called

Accepted Answer

None of these

Answer

High carbon steel

Answer

Wrought iron

Answer

Mild steel

Question 3

German silver used for decorative purposes contains maximum percentage of

Accepted Answer

Copper

Answer

Silver

Answer

Zinc

Answer

Nickel

Question 4

__________ does not contain copper as an alloying element,

Accepted Answer

Nichrome

Answer

Manganin

Answer

Perminivar

Answer

Monel metal

Question 5

Copper has very low

Accepted Answer

Tensile strength

Answer

Malleability

Answer

Ductility

Answer

Thermal & electrical conductivity

Question 6

Bearings subjected to light load are made of

Accepted Answer

Phosphorous bronze

Answer

White metal

Answer

Monel

Answer

Silicon bronze

Question 7

Caustic soda is produced in a mercury cell having anode and cathode made respectively of moving mercury and

Accepted Answer

Graphite and moving mercury

Answer

Moving mercury and graphite

Answer

Moving mercury and carbon

Answer

Moving mercury and crimped steel wire

Question 8

In the kraft (sulphate) process for the paper manufacture, the digestor is made of

Accepted Answer

Stainless steel

Answer

Cast iron

Answer

Karbate carbon

Answer

Wrought iron

Question 9

Which of the following is produced by addition polymerisation?

Accepted Answer

Polybutadiene

Answer

Phenol formaldehyde

Answer

Urea-formaldehyde

Answer

Dacron