Building Materials MCQ Solved Paper for RRB JE

1. A 1st class brick immersed in water for 24 hours, should not absorb water (by weight) more than
A. 10 %
B. 15 %
C. 20 %
D. 25 %
Answer : C

2. Lime stone is not a
A. Sedimentary rock
B. Stratified rock
C. Aqueous rock
D. Metamorphic rock
Answer : D

3. Cement paints usually
A. Contain hydrated lime
B. Contain 5% to 10% colour pigments
C. Contain 5% sodium chloride
D. All the above
Answer : D

4. 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

5. The compound of Portland cement which contributes to the strength after two to three years is
A. Tri-calcium silicate
B. Di-calcium silicate
C. Tri-calcium aluminate
D. Tetra-calcium alumino ferrite
Answer : B

6. Based on the following rocks and minerals, select the correct statement, quartz, shale, basalt, granite, marble, gypsum, mica
A. Basalt and marble are the only metamorphic rocks
B. There is no sedimentary rock
C. Granite is the only igneous rock
D. Quartz and mica are minerals
Answer : D

7. Bessemer process is used for the manufacture of
A. Pig iron
B. Cast iron
C. Wrought iron
D. Steel
Answer : D

8. Expansion Joints in masonry walls are provided in wall lengths usater than
A. 10 m
B. 20 m
C. 30 m
D. 40 m
Answer : D

9. 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

10. Distemper is
A. A paint consisting of powdered chalk, pigments and water
B. A water proofing agent
C. A paint consisting of coloured cement and water
D. A drying agent
Answer : A

11. The maximum quantity of calcium chloride used as an accelerator in cement in percentage by weight of cement is
A. 1
B. 2
C. 3
D. 4
Answer : B

12. Bitumen completely dissolves in
A. Carbon bisulphide
B. Chloroform
C. Coal tar
D. All of these
Answer : D

13. The silica is used for preparing
A. Silica bricks
B. Coke oven
C. Lining for glass furnaces
D. All of these
Answer : D

14. The hardest rock is
A. Marble
B. Diamond
C. Talc
D. Quartz
Answer : B

15. The rocks having alumina or clay as their major constituents are known as
A. Siliceous rocks
B. Argillaceous rocks
C. Calcareous rocks
D. Sedimentary rocks
Answer : B

16. The harmonious mixing of the clay ingredients, is known as
A. Weathering
B. Blending
C. Tempering
D. None of these
Answer : B

17. The most commonly used base for timber painting, is
A. Red lead
B. Zinc white
C. White lead
D. Titanium white
Answer : C

18. Galvanising means covering iron with a thin coat of
A. Tin
B. Zinc
C. Glaze
D. Coal tar
Answer : B

19. Pick up the correct statement from the following:
A. Catalysts are added to assist and accelerate the hardening of resin
B. The fillers are inert materials and they impart strength and hardness
C. Fibrous fillers increase thermal resistance
D. All the above
Answer : D

20. The portion of the brick without a triangular corner equal to half the width and half the length, is called
A. Closer
B. Queen closer
C. King closer
D. Squint brick
Answer : C

21. 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

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

23. 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

24. In stone masonry, stones (stratified rocks) are so placed that the direction of pressure to the plane of bedding is
A. Right angles
B. 45°
C. 60°
D. Parallel
Answer : A

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

26. The commonly used lime in white washing, is
A. White lime
B. Fat lime
C. Hydraulic lime
D. Quick lime
Answer : B

27. Name the type of cement from the following for canal linings:
A. Sulphate resisting cement
B. Rapid hardening cement
C. Quick setting cement
D. Pozzolana cement
Answer : A

28. The portion of the brick cut across its width and having its length equal to that of a full brick, is known as
A. Closer
B. Queen closer
C. King closer
D. Prince closer
Answer : B

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

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

31. For the manufacture of Portland cement, the proportions of raw materials used, are
A. Lime 63% ; silica 22% ; other ingredients 15%
B. Lime 22% ; silica 63% ; other ingredients 15%
C. Silica 40% ; lime 40% ; other ingredients 20%
D. Silica 70% ; lime 20% ; other ingredients 10%
Answer : A

32. A queen closer is a
A. Brick laid with its length parallel to the face or direction of wall
B. Brick laid with its breadth parallel to the face or direction of wall
C. Brick having the same length and depth as the other bricks but half the breadth
D. Brick with half the width at one end and full width at the other
Answer : C

33. First class timber has an average life of
A. Less than one year
B. 1 to 5 years
C. 5 to 10 years
D. More than 10 years
Answer : D

34. Stainless steel resists corrosion due to
A. Carbon
B. Sulphur
C. Vanadium
D. Chromium
Answer : D

35. 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

36. The rocks formed by gradual deposition, are called
A. Sedimentary rocks
B. Igneous rocks
C. Metamorphic rocks
D. None of these
Answer : A

37. Percentage of silica in a good brick earth lies between
A. 5 to 10 %
B. 20 to 30 %
C. 50 to 60 %
D. 70 to 80 %
Answer : C

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

39. Brittleness of cold is due to an excess of
A. Sulphur
B. Carbon
C. Phosphorus
D. Silicon
Answer : C

40. The yield strength and tensile strength of low carbon steel may be improved by the addition of
A. Manganese
B. Chromium
C. Nickel
D. Vanadium
Answer : D

41. 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

42. 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

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

44. Which of the following represents a metamorphic rock? (i) Slate (ii) Shale (iii) Quartzite The correct answer is
A. Only (iii)
B. Both (i) and (iii)
C. Both (ii) and (iii)
D. All (i), (ii) and (iii)
Answer : B

45. The practical limit of moisture content achieved in air drying of timber is
A. 5 %
B. 15 %
C. 25 %
D. 35 %
Answer : B

46. Softer variety of steel may be obtained by
A. Cementation process
B. Crucible process
C. Bessemer process
D. Open hearth process
Answer : C

47. Pick up the correct statement from the following:
A. Solder material is an alloy which melts at a temperature above 400°C
B. Brazing is done at temperature above 600°C to 1100°C
C. Brazing joint is stronger than the solder joint
D. All the above
Answer : D

48. The initial setting time of lime-pozzolana, is
A. 30 minutes
B. 60 minutes
C. 90 minutes
D. 120 minutes
Answer : D

49. 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

50. 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