1000+ Building Materials Multiple Choice Question Answer [Solved]

1. Lime putty
A. Is made from hydraulic lime
B. Is made by adding lime to water
C. Can be used only upto three days
D. All of above
Answer : D

2. Pick up the most favourable condition for the rapid growth of fungus for dry rot from the following:
A. Absence of sun light
B. Dampness
C. Presence of sap
D. All the above
Answer : D

3. Paints with white lead base are suitable for painting of
A. Wood work
B. Iron work
C. Both wood work and iron work
D. None of the above
Answer : A

4. Cast iron contains carbon approximately
A. 1.5% to 5.5%
B. 0.05% to 1.75%
C. 0.250 %
D. None to these
Answer : A

5. The rocks which are formed due to cooling of magma at a considerable depth from earth's surface are called
A. Plutonic rocks
B. Hypabyssal rocks
C. Volcanic rocks
D. Igneous rocks
Answer : A

6. A well seasoned timber may contain moisture up to
A. 4 to 6 %
B. 6 to 8 %
C. 8 to 10 %
D. 10 to 12 %
Answer : D

7. Geologically, marble is known as
A. Sedimentary rock
B. Igneous rock
C. Metamorphic rock
D. Stratified rock
Answer : C

8. Initial setting time of cement for asbestos cement products should be not less than
A. 30 minutes
B. 50 minutes
C. 75 minutes
D. 90 minutes
Answer : D

9. The weight of 1 m³ of brick earth, is about
A. 1200 kg
B. 1500 kg
C. 1800 kg
D. 2000 kg
Answer : C

10. Cast steel is manufactured by
A. Cementation process
B. Crucible process
C. Bessemer process
D. Open hearth process
Answer : B

11. Le-Chatelier's device is used for determining the
A. Setting time of cement
B. Soundness of cement
C. Tensile strength of cement
D. Compressive strength of cement
Answer : B

12. Porcelain is used as:
A. Sanitary wares
B. Electric insulators
C. Storage vessels
D. Reactor chambers
Answer : D

13. Quick lime (or caustic lime)
A. Is obtained by the calcination of pure lime stone
B. Has great affinity to moisture
C. Is amorphous
D. All the above
Answer : D

14. Rapid hardening cement attains early strength due to
A. Larger proportion of lime grounded finer than normal cement
B. Lesser proportion of lime grounded coarser than normal cement
C. Lesser proportion of lime grounded finer than normal cement
D. Excess percentage of gypsum
Answer : A

15. Pig iron obtained from the furnace which is properly provided with fuel at a very high temperature, is called
A. Bessemer pig
B. Grey or foundry pig
C. White or forge pig
D. Mottled pig
Answer : B

16. Pick up the constituent of good brick earth whose excess causes the raw bricks shrink and warp during drying and burning, from the following:
A. Alumina
B. Lime
C. Iron-oxide
D. Magnesia
Answer : A

17. Pick up the synthetic resin from the following:
A. Urea resin
B. Phenolic resin
C. Resorcinol resin
D. All of these
Answer : D

18. Quartzite is a
A. Metamorphic rock
B. Argillaceous rock
C. Calcareous rock
D. Siliceous rock
Answer : D

19. For preparing porcelains, the clay should be
A. Sufficiently pure
B. Of high degree of tenacity
C. Of good plasticity
D. All the above
Answer : D

20. Lacquer is
A. Oil paint
B. Distemper
C. Spirit varnish
D. None to these
Answer : C

21. The proportions of lime and sand in the mortar normally used in brick construction are
A. 1 : 2
B. 1 : 4
C. 1 : 6
D. 1 : 8
Answer : A

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

23. Pick up the correct statement from the following:
A. In stone arches, the stones are placed with their natural beds radial
B. In cornices, the stones are placed with their natural beds as vertical
C. In stone walls, the stones are placed with their natural beds as horizontal
D. All the above
Answer : D

24. Pick up the correct statement from the following:
A. The plywoods do not split or crack due to changes in atmosphere
B. The commercial plywoods are available upto 150 cm wide and upto 300 cm long
C. The plywoods possess uniform tensile strength in all directions
D. All the above
Answer : D

25. For filling cracks in masonry structures, the type of bitumen used, is
A. Cut-back bitumen
B. Bitumen-emulsion
C. Blown bitumen
D. Plastic bitumen
Answer : D

26. The cement becomes unsound by the presence of excess
A. Sulphur
B. Magnesia
C. Lime
D. All of these
Answer : D

27. A pug mill is used for
A. Softening brick earth
B. Moulding brick earth
C. Tempering brick earth
D. Providing brick earth
Answer : C

28. Dorry's testing machine is used for
A. Crushing test of stone
B. Hardness test of stone
C. Impact test of stone
D. Water absorption test
Answer : B

29. The rocks in which argil (or clay) predominates, are called
A. Siliceous rocks
B. Argillaceous rocks
C. Calcareous rocks
D. Igneous rocks
Answer : B

30. 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

31. Pick up the compound responsible for early strength of cement from the following:
A. Tetra-calcium alumino-ferrite
B. Tri-calcium silicate
C. Tri-calcium aluminate
D. Di-calcium silicate
Answer : B

32. The minimum percentage of silica, alumina and ferric oxide in lime for white washing, is
A. 20
B. 15
C. 5
D. 0
Answer : D

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

34. Age of a tree may be ascertained by
A. Radius of its stem
B. Circumference of its stem
C. Number of branches
D. Number of annual rings
Answer : D

35. In the cement the compound quickest to react with water, is
A. Tri-calcium aluminate
B. Tetra-calcium alumino-ferrite
C. Tri-calcium silicate
D. Di-calcium silicate
Answer : A

36. The main function of alumina in brick earth is
A. To impart plasticity
B. To make the brick durable
C. To prevent shrinkage
D. To make the brick impermeable
Answer : A

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

38. Pick up the metal refractory from the following:
A. Molybdenum
B. Tungsten
C. Zirconium
D. All of these
Answer : D

39. Slacking of lime is affected by
A. Keeping it exposed to air
B. Immersing the lime in water
C. Crushing the lime lumps
D. None of these
Answer : B

40. Quick lime
A. Generates heat when added to water
B. Reacts with carbon dioxide
C. May be used for white-washing
D. All the above
Answer : D

41. In stone masonry, if stones are so placed that their layers are parallel to the direction of load, they
A. Split easily
B. Are affected by moisture
C. Both (A) and (B)
D. None of these
Answer : C

42. Blister steel
A. Is obtained by cementation process
B. Is full of fissures and cavities
C. Can be easily welded
D. All the above
Answer : D

43. A badly mixed cement concrete results in
A. Segregation
B. Bleeding
C. Honey combing
D. None of these
Answer : C

44. In order of increasing percentage of silica, the correct sequence is
A. Sandy clay, calcareous clay, pure clay
B. Calcareous clay, pure clay, sandy clay
C. Pure clay, sandy clay, calcareous clay
D. None of these
Answer : B

45. Slump test for concrete is carried out, to determine
A. Strength
B. Durability
C. Workability
D. Water content
Answer : C

46. Pick up the correct statement from the following:
A. In basic Bessemer process, the steel heats the converter
B. In open-hearth process, the furnace heats the steel
C. In Siemens process, the impurities of pig iron are oxidised by the oxygen of the ore
D. All the above
Answer : D

47. The type of steel used for precision levelling staff, is
A. Titanium steel
B. Carbon steel
C. Invar
D. Stainless steel
Answer : C

48. Which of the following gradients exerts maximum influence on properties of steel?
A. Iron
B. Carbon
C. Manganese
D. Sulphur
Answer : B

49. Mastic asphalt is
A. Water proof
B. Fire proof
C. Elastic
D. All the above
Answer : D

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