Question 1

The main function of alumina in brick earth is

Accepted Answer

to impart plasticity

Answer

to make the brick impermeable

Answer

to make the brick durable

Answer

to prevent shrinkage

Question 2

1% of voids in a concrete mix would reduce its strength by about

Accepted Answer

5 %

Answer

15 %

Answer

20 %

Answer

10 %

Question 3

Hardness of rock can be tested in-situ using

Accepted Answer

Hammer test

Answer

Smith's test

Answer

Impact test

Answer

Acid test

Question 4

Fineness of cement is measured in the units of

Accepted Answer

area/mass

Answer

volume/mass

Answer

mass/area

Answer

mass/volume

Question 5

Surkhi is added to lime mortar to

Accepted Answer

impart hydraulicity

Answer

increase bulk

Answer

increase bulk density

Answer

decrease setting time

Question 6

The multiplying constant for the tacheometry is generally kept as

Accepted Answer

100

Answer

20

Answer

0

Answer

60

Question 7

The compressive strength of 100 mm cube as compared to 150 mm cube is

Accepted Answer

more

Answer

none of these

Answer

less

Answer

equal

Question 8

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

Accepted Answer

Refractory bricks

Answer

Under-burnt bricks

Answer

Over-burnt bricks

Answer

First class bricks

Question 9

In which of the following directions, the strength of timber is maximum?

Accepted Answer

parallel to grains

Answer

same in all directions

Answer

45 deg to the grains

Answer

perpendicular to grains

Question 10

In double flag stone floors , the size of flag stone is

Accepted Answer

40 mm

Answer

10 mm

Answer

50 m,m

Answer

20 mm

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