1000+ Building Materials Multiple Choice Question Answer [Solved]

1. Mastic asphalt is generally used for
A. Damp proof course
B. Water proof layer
C. Partition walls
D. Both (A) and (B)
Answer : D

2. Durability of building stone is affected by its
A. Chemical composition
B. Texture
C. Resistance to atmosphere
D. All the above
Answer : D

3. Plaster of Paris is obtained by calcining
A. Bauxite
B. Gypsum
C. Lime stone
D. None of these
Answer : B

4. To retard the initial setting time of cement, the compound responsible, is
A. Tri-calcium silicate
B. Gypsum
C. Di-calcium silicate
D. Tri-calcium aluminate
Answer : B

5. Mastic asphalt is normally used for
A. Sound insulation
B. Water proofing
C. Fire proofing
D. None to these
Answer : B

6. The frog of the brick in a brick masonry is generally kept on
A. Bottom face
B. Top face
C. Shorter side
D. Longer side
Answer : B

7. The internal size of mould used in brick preparation is
A. Equal to the size of a fully burnt brick
B. Smaller than the size of a fully burnt brick
C. Greater than the size of a fully burnt brick
D. None of the above
Answer : C

8. The specific gravity of marble, is
A. 2.50
B. 2.60
C. 2.66
D. 2.72
Answer : D

9. Fibre boards can be
A. Distempered
B. Painted
C. Painted and distempered
D. Used for furniture
Answer : D

10. Jumper is a tool used for
A. Testing of stones
B. Quarrying of stones
C. Dressing of stones
D. None of the above
Answer : B

11. Stones used for rubble masonry must be
A. Soft
B. Hard
C. Light
D. Heavy
Answer : B

12. Plywood is made by bonding together thin layers of wood in such a way that the angle between grains of any layer to grains of adjacent layers is
A. 0°
B. 30°
C. 45°
D. 90°
Answer : D

13. Good quality sand is never obtained from
A. River
B. Lake
C. Sea
D. Gravel powder
Answer : C

14. Sand stone is
A. Sedimentary rock
B. Metamorphic rock
C. Igneous rock
D. Volcanic rock
Answer : A

15. Early attainment of strength in rapid hardening cement is mainly due to
A. Gypsum
B. Finer grinding
C. Tri-calcium silicate
D. Tri-calcium aluminate
Answer : B

16. As per IS specifications, the maximum final setting time for ordinary Portland cement should be
A. 30 minutes
B. 1 hour
C. 6 hours
D. 10 hours
Answer : D

17. The term frog means
A. An apparatus to lift the stone
B. A depression on a face of brick
C. Vertical joint in a brick work
D. Soaking brick in water
Answer : B

18. The most commonly used retarder in cement is
A. Gypsum
B. Calcium chloride
C. Calcium carbonate
D. None of the above
Answer : A

19. With increase in moisture content, the bulking of sand
A. Increases
B. Decreases
C. First increases to a certain maximum value and then decreases
D. First decreases to a certain minimum value and then increases
Answer : C

20. When a brick is immersed in water for 24 hours and then dried, if
A. No grey or white deposits appear on the surface, the brick is free from soluble salts
B. 10 percent surface is covered with grey or white deposits, the brick has slight efflorescence
C. 50 percent surface is covered with grey or white deposits, the brick has serious efflorescence
D. All the above
Answer : D

21. The melting point of silica is:
A. 1570°C
B. 1630°C
C. 1730°C
D. 1850°C
Answer : C

22. Vanadium steel is generally used for
A. Railway switches and crossing
B. Bearing balls
C. Magnets
D. Axles and springs
Answer : D

23. Dry rot
A. Cracks the timber
B. Reduces the strength of timber
C. Reduces the timber to powder
D. Spoils the appearance of timber
Answer : C

24. The main constituent of cement which is responsible for initial setting of cement is
A. Di-calcium silicate
B. Tri-calcium silicate
C. Tri-calcium aluminate
D. All of the above
Answer : C

25. Cement is said to be of good quality if
A. Its colour is not greenish grey
B. One feels cool by thrusting one's hand in the cement bag
C. A handful of cement thrown into a bucket of water does not float
D. None of these
Answer : D

26. The steel used for the manufacture of rails, is
A. Bessemer steel
B. Mild steel
C. Cast steel
D. Stainless steel
Answer : A

27. Spalling hammer is used for
A. Driving wooden headed chisels
B. Rough dressing of stones
C. Carving of stones
D. Breaking small projection of stones
Answer : B

28. The kiln which may work throughout the year, is
A. Clamp
B. Bull's kiln
C. Hoffman's kiln
D. None of these
Answer : C

29. A rock contains only one mineral. It is called
A. Homogeneous
B. Non-homogeneous
C. Monomineralic
D. Polymineralic
Answer : C

30. Whitworth compressed steel is obtained when molten steel is subjected to a pressure of
A. 5 kg/mm²
B. 9 kg/mm²
C. 13 kg/mm²
D. 15 kg/mm²
Answer : B

31. For lime concrete,
A. Slump is 50 to 75 mm
B. Flexural strength at 90 days is 0.2 N/mm²
C. Compressive strength at 90 days is 1.5 N/mm²
D. All the above
Answer : D

32. Study the following statements. (i) Hydraulic lime is suitable for white washing, (ii) Fat lime is suitable for whitewashing, (iii) Hydraulic lime is suitable for making mortar, (iv) Fat lime is suitable for making mortar. The correct answer is
A. (i) and (iv)
B. (ii) and (iii)
C. (i) and (ii)
D. (iii) and (iv)
Answer : B

33. The timber having maximum resistance against white ants, is obtained from
A. Chir
B. Shishum
C. Sal
D. Teak
Answer : B

34. Glazing is used to make earthenware
A. Hard
B. Soft
C. Porous
D. Impervious
Answer : D

35. Pick up the correct statement from the following:
A. Melamine is obtained from calcium carbide
B. Formaldehyde is prepared synthetically from methane
C. The melamine when reacted with formaldehyde forms the melamineformaldehyde resin
D. All the above
Answer : D

36. Acrylic sheets
A. Possess 10 to 17 times greater breakage resistance than that of glass of equivalent thickness
B. Are generally unaffected by most household detergents
C. Possess the light transmission rate of 93%
D. All the above
Answer : D

37. Pick up the hypabyssal rock from the following:
A. Granite
B. Dolerite
C. Basalt
D. All the above
Answer : B

38. Water paint is a
A. White wash
B. Colour wash
C. Whiting
D. All the above
Answer : D

39. Expanded metal is
A. Manufactured from steel sheets
B. Used for reinforced concrete in road pavements
C. Measured in term of SWM (short way mesh) and LWM (long way mesh)
D. All the above
Answer : D

40. Gneiss is obtained from
A. Igneous rocks
B. Metamorphic rocks
C. Sedimentary rocks
D. Sedimentary metamorphic rocks
Answer : D

41. Red short iron cracks when bent due to the presence of
A. Sulphur
B. Carbon
C. Phosphorus
D. Silicon
Answer : A

42. The coefficient of hardness of stones used in road work should be greater than
A. 10
B. 12
C. 15
D. 17
Answer : D

43. According to IS specifications, the compressive strength of ordinary Portland cement after three days should not be less than
A. 7 MPa
B. 11.5 MPa
C. 16 MPa
D. 21 MPa
Answer : C

44. The amount of water used for one kg of distemper is
A. 0.2 liter
B. 0.4 liter
C. 0.6 liter
D. 0.8 liter
Answer : C

45. Pug mill is used for
A. Preparation of clay
B. Moulding of clay
C. Drying of bricks
D. Burning of bricks
Answer : A

46. The base material for distemper, is
A. Chalk
B. Lime
C. Lime putty
D. Cement wash
Answer : A

47. The normal consistency of ordinary Portland cement is about
A. 10 %
B. 20 %
C. 30 %
D. 40 %
Answer : C

48. A good quality stone absorbs water less than
A. 5 %
B. 10 %
C. 15 %
D. 25 %
Answer : A

49. The clay to be used for manufacturing bricks for a large project, is dugout and allowed to weather throughout
A. The monsoon
B. The winter
C. The summer
D. None of these
Answer : A

50. For sanitary pipes and chemical stonewares,
A. Salt glazing is used
B. Lead glazing is used
C. Opaque glazing is used
D. None of these
Answer : A