JNTU Ananthapur Basic civil and mechanical engineering second unit multiple choice questions and answers

1. • 1. Unburnt bricks are also called:
a) Dry bricks
b) Clayey bricks
c) Kucha bricks
d) Clamp bricks

2. • 2. Burnt bricks can be further classified into
how many types?
a) 2
b) 4
c) 3
d) 5

3. • 3. First class bricks are used for:
a) Brick ballast in R.C.C
b) Boundary walls
c) Low height walls
d) Pavements

4. • 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

5. • 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

6. • 6. Pilas are under burnt bricks.
a) True
b) False

7. • 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

8. • 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

9. • 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

10. • 10. Fire clay bricks are made by burning them
at high temperatures in a closed chamber.
a) True
b) False

11. • 12. What is the problem with using flyash
bricks?
a) Efflorescence
b) Costly
c) Expand
d) Not sound proof

12. • 13. In a mortar, the binding material is
• A.cement
• B.sand
• C.surkhi
• D.cinder.

13. • 14. Lacquer paints
• A.are generally applied on structural steel
• B.are less durable as compared to enamel
paints
• C.consist of resin and nitro-cellulose
• D.contain alcohol as thinner
• E.all the above.

14. • 15. Glass is a mixture of:
a) Non-metallic silicates
b) Metallic silicates
c) Metallic acetates
d) Non-metallic acetates

15. • 16. How many different categories of glass are
there?
a) 5
b) 4
c) 2
d) 3

16. • 17. Which of the following types of glass
accounts for about 90% of manufactured
glass?
a) Potash-lime glass
b) Soda-lime glass
c) Potash-lead glass
d) Soda-lead glass

17. • 18. Glass is not a single compound.
a) True
b) False

18. • 19. Which type of glass is used in the
manufacture of artificial gems, bulbs, lenses,
etc?
a) Soda-lime glass
b) Special glass
c) Potash-lead glass
d) Common glass

19. • 20. What changes are observed when a glass
is heated?
a) It becomes softer
b) It bursts
c) It solidifies
d) It disintegrates