Basic Civil Engineering Multiple Choice Questions on “Types of Bricks”.
1. Unburnt bricks are also called:
a) Dry bricks
b) Clayey bricks
c) Kucha bricks
d) Clamp bricks
Answer: c
Clarification: Unburnt bricks are the one dried in the sun, after moulding. They are kept for a long time until they dry. Sometimes due to a large number of bricks, limited time, improper workman skills, the bricks are not completely dried and hence are called Kucha bricks.
2. Burnt bricks can be further classified into how many types?
a) 2
b) 4
c) 3
d) 5
Answer: b
Clarification: There can be 4 sub-divisions of burnt bricks. They are first class, second class, third class and kiln rejected bricks.
3. First class bricks are used for:
a) Brick ballast in R.C.C
b) Boundary walls
c) Low height walls
d) Pavements
Answer: d
Clarification: First class bricks are strong, durable and have a good appearance. These are used for important work, load bearing works. Pavements, flooring, load bearing wall are some places of use.
4. The minimum crushing strength of third class brick is:
a) 3.5 N/mm2
b) 7 N/mm2
c) 10 N/mm2
d) 20 N/mm2
Answer: a
Clarification: As per IS codes, the minimum crushing strength of first class brick is 10.5 N/mm2, second class is 7 N/mm2 and third class is 3.5 N/mm2.
5. Which of the following is not a feature of second class bricks?
a) Have small irregularities
b) Water absorption is between 20-25%
c) Rectangular in shape
d) Free from cracks
Answer: b
Clarification: The water absorption of second class bricks is less than 22%. 20-25% is the range of water absorption of third class bricks.
6. Pilas are under burnt bricks.
a) True
b) False
Answer: a
Clarification: Pilas are under burnt or half burnt bricks with yellow colour. They can be used as surkhi. Zhamas are over burnt bricks and are kiln waste. Picked Zhamas can be used in road work.
7. What is the speciality of FALG bricks?
a) Are composed of agricultural waste
b) Round in shape
c) Economic alternative to clay bricks
d) Widely used in masonry work
Answer: c
Clarification: FALG bricks are composed of flyash, lime and gypsum. It utilises the waste from thermal power plants and hence it is an economic alternative to clay bricks.
8. Which of the following bricks types use the least amount of clay?
a) Hollow bricks
b) Coping bricks
c) Channel bricks
d) Perforated bricks
Answer: d
Clarification: Perforated bricks contain cylindrical holes throughout their thickness. These are light in weight. They use a very little amount of clay.
9. Which of the following type of bricks is made for jambs of doors and windows?
a) Cant bricks
b) Arch bricks
c) Lintel bricks
d) Hinged bricks
Answer: a
Clarification: Purpose-made bricks are those made to achieve a specific purpose. They can be splay or Cant, Arch, Ornamental, etc. They are costly but help in quick construction.
10. Fire clay bricks are made by burning them at high temperatures in a closed chamber.
a) True
b) False