Building Materials MCQs

Question 1

Asbestos . . . . . . . .

Accepted Answer

All the above

Answer

Is a natural fibrous mineral substance

Answer

Is composed of hydrous silicates of calcium and magnesium (CaSiO3, 3MgSiO3)

Answer

Contains iron oxide and alumina

Question 2

Asbestos . . . . . . . .

Accepted Answer

All the above

Answer

Is an excellent insulator for heat and electricity

Answer

Is fire-proof and acid proof

Answer

Has specific gravity equal to 3.10

Question 3

Asbestos cement . . . . . . . .

Accepted Answer

All of the above

Answer

Is brittle

Answer

Warps due to changes in humidity

Answer

Strength is lowered when saturated by water

Question 4

Asbestos is

Accepted Answer

All the above

Answer

Corrugated sheet used for roofing

Answer

An incombustible fire proof material

Answer

An organic substance

Question 5

The standard size of masonry bricks, is

Accepted Answer

19 cm x 9 cm x 9 cm

Answer

18 cm x 8 cm x 8 cm

Answer

20 cm x 10 cm x 10 cm

Answer

21 cm x 11 cm x 11 cm

Question 6

The stone suitable for rubble masonry should be.

Accepted Answer

Hard

Answer

Tough

Answer

Heavy

Answer

Light

Question 7

The filler used in plastic bitumen, is

Accepted Answer

Asbestos powder

Answer

Shale powder

Answer

Talc powder

Answer

Plastic powder

Question 8

Softer variety of steel may be obtained by

Accepted Answer

Bessemer process

Answer

Cementation process

Answer

Crucible process

Answer

Open hearth process

Question 9

A first class brick when immersed in cold water for 24 hours should not absorb water more than

Accepted Answer

20%

Answer

15%

Answer

22%

Answer

25%