Materials and Construction MCQs

Question 1

Caustic soda is transported in __________ lined containers.

Accepted Answer

Either B or C

Answer

Glass

Answer

Nickel

Answer

Neoprene

Question 2

Sulphuric acid is mixed with ground phosphate rock (to produce phosphoric acid) in a steel digestor lined with

Accepted Answer

Lead or acid-proof bricks

Answer

Acidic refractory

Answer

Rubber

Answer

Karbate

Question 3

Which of the following is an alloy of nickel and copper?

Accepted Answer

Monel

Answer

Hastelloy

Answer

Duriron

Answer

Inconel

Question 4

Bog iron used for the adsorption of H 2 S from coke oven gas is

Accepted Answer

An intimate mixture of saw dust and iron dust (i.e. moist ferric hydroxide)

Answer

Iron impregnated with resin (usually bakelite)

Answer

Carbon free iron

Answer

None of these

Question 5

Addition of tungsten to steel imparts

Accepted Answer

Cutting hardness

Answer

Magnetic properties

Answer

Corrosion resistance

Answer

Ductility

Question 6

With increase in the carbon percentage in the steel, its

Accepted Answer

All of the above

Answer

Hardness increases

Answer

Ductility reduces

Answer

Tensile strength increases

Question 7

A material is able to retain the deformation permanently by virtue of its

Accepted Answer

Plasticity

Answer

Elasticity

Answer

Ductility

Answer

Malleability

Question 8

Addition of lead, sulphur and phosphorus to low carbon steel helps in improving its

Accepted Answer

Machinability

Answer

Corrosion resistance

Answer

Tensile strength

Answer

Compressive strength

Question 9

Carbon content in steel is __________ percent.

Accepted Answer

0.1-2

Answer

4-6

Answer

2-4

Answer

0.001-0.01