Building Materials MCQ Solved Paper for IBPS RRB

1. 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

2. Lime concrete is generally used for
A. Wall foundations
B. Flooring at ground level
C. Both (A) and (B)
D. Neither (A) nor (B)
Answer : B

3. Kaolin is chemically classified as
A. Metamorphic rock
B. Argillaceous rock
C. Calcareous rock
D. Siliceous rock
Answer : B

4. Quick lime is
A. Calcium carbonate
B. Calcium oxide
C. Calcium hydroxide
D. None of the above
Answer : B

5. Bitumen paints offer
A. Pleasing surface
B. Hard surface
C. Smooth surface
D. Protective surface
Answer : D

6. With storage, strength of cement
A. Increases
B. Decreases
C. Remains the same
D. None to these
Answer : B

7. Which of the following pairs gives a correct combination of the useful and harmful constituents respectively of a good brick earth?
A. Lime stone and alumina
B. Silica and alkalies
C. Alumina and iron
D. Alkalies and magnesium
Answer : B

8. Mastic asphalt is
A. Acid resisting material
B. Non-corrosive material
C. Corrosive material
D. Heating-resisting material
Answer : B

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

10. Crushing strength of a first class brick should not be less than
A. 3.5 N/mm²
B. 7.0 N/mm²
C. 10.5 N/mm²
D. 14.0 N/mm²
Answer : C

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

12. Most commonly used solvent in oil paints, is
A. Petroleum
B. Spirit
C. Coal tar
D. Turpentine
Answer : A

13. Sapwood consists of
A. Innermost annular rings around the pith
B. Portion of timber between heartwood and cambium layer
C. Thin layers below the bark
D. Thin fibre which extends from the pith outwards and holds the annular rings together
Answer : B

14. For construction of structures under water, the type of lime used, is
A. Hydraulic lime
B. Fat lime
C. Quick lime
D. Pure lime
Answer : A

15. The plastics prepared from Vinyl resin are
A. Odourless
B. Non-toxic
C. Transparent
D. All of these
Answer : D

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

17. In arches, stratified stones are placed so that their planes are
A. Parallel
B. Perpendicular
C. Radial
D. None of these
Answer : C

18. Pick up the correct statement from the following:
A. Soft stones are required for carving
B. Light stones are required for arches
C. Hard stones are required to stand high pressure
D. All the above
Answer : D

19. Pig iron made from haematite ores free from sulphur, phosphorus and copper, is known as
A. Bessemer pig
B. Grey or foundry pig
C. White or forge pig
D. Mottled pig
Answer : A

20. Pick up the correct statement from the following:
A. Quick lime is obtained by burning pure lime stone
B. Hydraulic lime is obtained by burning lime stone containing clay 5% to 30%
C. Poor lime is obtained by burning lime stone containing impurities more than 5%
D. All the above
Answer : D

21. Mild steel is used for
A. Structural works in beams, joints and girders
B. Small sized water pipes
C. Columns and struts
D. None of these
Answer : A

22. 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

23. The material generally not used as extender in paints, is
A. Powdered silica
B. Gypsum
C. Talc
D. Zinc white
Answer : D

24. Portland pozzolana cement possesses
A. Higher resistance to chemical attack
B. Lower heat of hydration
C. Lower shrinkage on drying
D. All the above
Answer : D

25. Pick up the correct statement from the following:
A. Acid test is done to find out the weathering quality of stones
B. Attrition test is done to find out the rate of wear of stones which are used in road construction
C. Crushing test is done to find out the compressive strength of the stone
D. All the above
Answer : D

26. Pick up the correct statement from the following:
A. Bull's trench kiln a trench excavated in ground
B. Hoffman's kiln is constructed over ground
C. Tunnel Kiln is constructed as a tunnel
D. All the above
Answer : D

27. The slenderness ratio for masonry walls should not be more than
A. 10
B. 20
C. 30
D. 40
Answer : B

28. The process of mixing clay, water and other ingredients to make brick is known as
A. Kneading
B. Moulding
C. Pugging
D. Drying
Answer : A

29. For high grade instruments the steel preferred to, is
A. Cast steel
B. Bessemer steel
C. Mild steel
D. Whitworth compressed steel
Answer : A

30. Pick up the non-inflammable plastic from the following:
A. Cellulose acetate plastics
B. Polyvinyl chloride plastics
C. Phenol formaldehyde plastic
D. Urea formaldehyde plastic
Answer : B

31. Rapid hardening cement contains
A. Tri-calcium silicate
B. Tri-calcium aluminate
C. Tetra-calcium alumino-ferrite
D. Di-calcium silicate
Answer : A

32. The rock generally used for roofing, is
A. Granite
B. Basalt
C. Slate
D. Pumice
Answer : C

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

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

35. Which of the following is a rock?
A. Quartz
B. Mica
C. Gypsum
D. None of the above
Answer : C

36. Steel contains carbon approximately
A. 1.50% to 5.6%
B. 0.05% to 1.75%
C. 0.25 %
D. None to these
Answer : B

37. A ferrous metal is
A. Cast iron
B. Wrought iron
C. Steel
D. All the above
Answer : D

38. Good quality cement contains higher percentage of
A. Tri-calcium silicate
B. Di-calcium silicate
C. Tri-calcium aluminate
D. Tetra calcium alumino ferrite
Answer : A

39. French polish is
A. Oil paint
B. Distemper
C. Spirit varnish
D. None to these
Answer : C

40. Bullet proof glass is made of thick glass sheet sandwiched by a layer of
A. Steel
B. Stainless steel
C. High test plastic
D. Chromium plate
Answer : C

41. During smelting process, the combination of fuel in the furnace
A. Forms carbon dioxide
B. Carbon dioxide with carbon forms carbon mono-oxide
C. Carbon mono-oxide reacts with Fe2O3 to form iron and liberates CO2
D. All the above
Answer : D

42. Stones used for the construction of retaining walls must be
A. Soft
B. Hard
C. Light
D. Heavy
Answer : D

43. Sandstone is a (i) Sedimentary rock (ii) Aqueous rock (iii) Siliceous rock The correct answer is
A. Only (i)
B. Both (i) and (ii)
C. Both (i) and (iii)
D. All (i), (ii) and (iii)
Answer : D

44. The sequence of refractory materials according to increasing melting points is:
A. Dolomite, Magnesia, Bauxite, Chromites
B. Bauxite, Chromites, Dolomite, Magnesia
C. Magnesia, Bauxite, Dolomite, Chromites
D. None of these
Answer : B

45. Smith's test of stones is performed to find out
A. The presence of soluble matter of stone
B. The compressive strength of the stone
C. The hardness of the stone
D. The toughness of the stone
Answer : A

46. Formula for quick lime, is
A. CaCO₃
B. Ca(OH)₂
C. CO₃CO₂
D. None to these
Answer : A

47. Sewer pipes are made of
A. Earthen ware
B. Stone ware
C. Refractory clay
D. All the above
Answer : B

48. Forge pig may be converted to wrought iron by
A. Rolling
B. Pudding
C. Shingling
D. Refining
Answer : B

49. Pick up the correct statement from the following:
A. Roasting is not necessary if iron ore is an oxide
B. Impurities float on the molten iron as slag
C. The slag contains lime about 45%
D. All the above
Answer : D

50. 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