Building Materials MCQs

Question 1

Sea sand used in structures causes

Accepted Answer

All of these

Answer

Dampness

Answer

Efflorescence

Answer

Disintegration

Question 2

Cross cut saw is used for

Accepted Answer

Cutting hard stones

Answer

Cutting soft stones

Answer

Cutting large blocks of stones

Answer

Dressing stones

Question 3

Wrought iron contains carbon upto

Accepted Answer

0.25%

Answer

1.0%

Answer

1.5%

Answer

2.0%

Question 4

Which of the following sedimentary rocks changes into quartzite by metamorphic action?

Accepted Answer

Sand stone

Answer

Lime stone

Answer

Shale

Answer

Gypsum

Question 5

Non acid-resistant asbestos is:

Accepted Answer

Chrysotile asbestos

Answer

Tremolite asbestos

Answer

Amosite asbestos

Answer

None of these

Question 6

Bitumen completely dissolves in

Accepted Answer

All of these

Answer

Carbon bisulphide

Answer

Chloroform

Answer

Coal tar

Question 7

For the manufacture of Portland cement, the proportions of raw materials used, are

Accepted Answer

Lime 63% ; silica 22% ; other ingredients 15%

Answer

Lime 22% ; silica 63% ; other ingredients 15%

Answer

Silica 40% ; lime 40% ; other ingredients 20%

Answer

Silica 70% ; lime 20% ; other ingredients 10%

Question 8

Galvanising means covering iron with a thin coat of

Accepted Answer

Zinc

Answer

Tin

Answer

Glaze

Answer

Coal tar

Question 9

The plywood . . . . . . . .

Accepted Answer

Has greater impact resistance to blows than ordinary wood

Answer

Has good strength along the panel only

Answer

Can be spilt in the plane of the panel

Answer

Cannot be bent more easily than ordinary wood of same thickness