Building Materials MCQs

Question 1

When a brick is immersed in water for 24 hours and then dried, if

Accepted Answer

All the above

Answer

No grey or white deposits appear on the surface, the brick is free from soluble salts

Answer

10 percent surface is covered with grey or white deposits, the brick has slight efflorescence

Answer

50 percent surface is covered with grey or white deposits, the brick has serious efflorescence

Question 2

In a mortar, the binding material is

Accepted Answer

Cement

Answer

Sand

Answer

Surkhi (brick-dust)

Answer

Cinder

Question 3

Lime mortar is generally made with

Accepted Answer

Hydraulic lime

Answer

Quick lime

Answer

Fat lime

Answer

Plain lime

Question 4

Advantage of a clamp compared to a kiln for burning bricks is that

Accepted Answer

It has less initial cost

Answer

It takes less time for burning

Answer

It gives more output of first class bricks

Answer

It is suitable when bricks are required in large numbers

Question 5

The type of bond provided in brick masonry for carrying heavy loads is

Accepted Answer

English bond

Answer

Single Flemish bond

Answer

Double Flemish bond

Answer

Zigzag bond

Question 6

Expansion Joints in masonry walls are provided in wall lengths usater than

Accepted Answer

40 m

Answer

10 m

Answer

20 m

Answer

30 m

Question 7

Which of the following bricks are used for lining of furnaces?

Accepted Answer

Refractory bricks

Answer

Over-burnt bricks

Answer

Under-burnt bricks

Answer

First class bricks

Question 8

The curved swellings from the growth of layers or wounds left after branches are cut off in an irregular manner are known as

Accepted Answer

Rindgalls

Answer

Knots

Answer

Burls

Answer

None of these

Question 9

The age of a tree can be known by examining

Accepted Answer

Annular rings

Answer

Cambium layer

Answer

Medullary rays

Answer

Heart wood