Building Materials MCQs

Question 1

The weight of a good quality brick when immersed in water for a period of 16 hours should not exceed the weight of dry brick

Accepted Answer

20%

Answer

15%

Answer

10%

Answer

None of these

Question 2

Seasoning of timber is done for

Accepted Answer

Decreasing moisture content

Answer

Increasing moisture content

Answer

Increasing strength of timber

Answer

None to these

Question 3

The initial setting time of lime-pozzolana, is

Accepted Answer

120 minutes

Answer

30 minutes

Answer

60 minutes

Answer

90 minutes

Question 4

Priming consists of

Accepted Answer

One part of white lead, 8 parts of chalk and four parts of twice boiled linseed oil

Answer

8 parts of white lead, one part of chalk and four parts of twice boiled linseed oil

Answer

One part of white lead, 8 parts of chalk and one part of linseed oil

Answer

None to these

Question 5

The main function of alumina in brick earth is

Accepted Answer

To impart plasticity

Answer

To make the brick durable

Answer

To prevent shrinkage

Answer

To make the brick impermeable

Question 6

A well seasoned timber may contain moisture up to

Accepted Answer

10 to 12%

Answer

4 to 6%

Answer

6 to 8%

Answer

8 to 10%

Question 7

The commonly used thinner in oil paints, is

Accepted Answer

Both (A) and (B)

Answer

Naphtha

Answer

Turpentine

Answer

None of these

Question 8

Most commonly used solvent in oil paints, is

Accepted Answer

Petroleum

Answer

Spirit

Answer

Coal tar

Answer

Turpentine

Question 9

Plaster of Paris is obtained by calcining

Accepted Answer

Gypsum

Answer

Bauxite

Answer

Lime stone

Answer

None of these