Building Materials MCQs

Question 1

Which of the following is the purest form of iron?

Accepted Answer

Wrought iron

Answer

Cast iron

Answer

Mild steel

Answer

High carbon steel

Question 2

The most common admixture which is used to accelerate the initial set of concrete is

Accepted Answer

Calcium chloride

Answer

Gypsum

Answer

Calcium carbonate

Answer

None of the above

Question 3

Proper amount of entrained air in concrete results in (i) Better workability (ii) Better resistance to freezing and thawing (iii) Lesser workability (iv) Less resistance to freezing and thawing

Accepted Answer

(i) and (ii)

Answer

(i) and (iv)

Answer

(ii) and (iii)

Answer

(iii) and (iv)

Question 4

Fibre glass

Accepted Answer

All the above

Answer

Retains heat-longer

Answer

Has a higher strength to weight ratio

Answer

Is shock proof and fire retardant

Question 5

The base material for distemper, is

Accepted Answer

Chalk

Answer

Lime

Answer

Lime putty

Answer

Cement wash

Question 6

The most important tool in brick laying for lifting and spreading mortar and for forming joints is

Accepted Answer

Trowel

Answer

Square

Answer

Bolster

Answer

Scutch

Question 7

French polish is

Accepted Answer

Spirit varnish

Answer

Oil paint

Answer

Distemper

Answer

None to these

Question 8

If the iron ore contains clay as an impurity, the flux added during calcination, is

Accepted Answer

Lime stone

Answer

Clay

Answer

Argillaceous iron ore

Answer

All the above

Question 9

Rapid hardening cement contains

Accepted Answer

Tri-calcium silicate

Answer

Tri-calcium aluminate

Answer

Tetra-calcium alumino-ferrite

Answer

Di-calcium silicate