Building Materials objective Questions PDF
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1. According to ISI, bitumen is classified into
A. 2 grades
B. 4 grades
C. 8 grades
D. 10 grades
Answer: Option D
2. Sand stone is
A. Sedimentary rock
B. Metamorphic rock
C. Igneous rock
D. Volcanic rock
Answer: Option A
3. The main ingredients of Portland cement are
A. Lime and silica
B. Lime and alumina
C. Silica and alumina
D. Lime and iron
Answer: Option A
4. Jumper is a tool used for
A. Testing of stones
B. Quarrying of stones
C. Dressing of stones
D. None of the above
Answer: Option B
5. Plastics are compounds of carbon with element
A. Hydrogen
B. Nitrogen
C. Oxygen
D. All of these
Answer: Option D
6. Quick lime is
A. Calcium carbonate
B. Calcium oxide
C. Calcium hydroxide
D. None of the above
Answer: Option B
7. Quartzite is a
A. Metamorphic rock
B. Argillaceous rock
C. Calcareous rock
D. Siliceous rock
Answer: Option D
8. The cement becomes unsound by the presence of excess
A. Sulphur
B. Magnesia
C. Lime
D. All of these
Answer: Option D
9. Plastic
A. Is an organic substance
B. Consists of natural or synthetic binders
C. Finished products are rigid and stable at normal temperature
D. All the above
Answer: Option D
10. Cast steel is manufactured by
A. Cementation process
B. Crucible process
C. Bessemer process
D. Open hearth process
Answer: Option B
11. Glazing of clay products, is done
A. To improve their appearance
B. To protect them from atmospheric effect
C. To protect them from corrosive action
D. All the above
Answer: Option D
12. 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: Option A
13. Which one of the following is used for preparing porcelain?
A. Clay
B. Feldspar
C. Quartz
D. All of these
Answer: Option D
14. The commonly used drying oil for oil paints, is
A. Olive oil
B. Linseed oil
C. Kerosene oil
D. Acetate of lead
Answer: Option D
15. A stone is rejected if it absorbs water more than
A. 5 %
B. 10 %
C. 15 %
D. 20 %
Answer: Option B
16. Quick setting cement is produced by adding
A. Less amount of gypsum in very fine powdered form
B. More amount of gypsum in very fine powdered form
C. Aluminium sulphate in very fine powdered form
D. Pozzolana in very fine powdered form
Answer: Option C
17. 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: Option B
18. The portion of a brick cut to form angles other than right angles in plan, is known as
A. Queen closer
B. King closer
C. Closer
D. Squint brick
Answer: Option D
19. Knots in timber are
A. Defects caused by crushing fibres
B. Splits radiating from the centre
C. Speckled strains
D. Signs of branches cut off
Answer: Option D
20. A volatile substance added to a paint to make its application easy and smooth, is known as
A. Base
B. Solvent
C. Vehicle
D. None to these
Answer: Option B
Building Materials objective Questions PDF
21. Which of the following ingredients of the brick earth enables the brick to retain its shape?
A. Alumina
B. Silica
C. Iron
D. Magnesia
Answer: Option B
22. For making fly-ash building bricks, the following mix of fly-ash, sand and lime, is
A. 80 : 13 : 7
B. 70 : 20 : 10
C. 60 : 35 : 5
D. None of these
Answer: Option A
23. 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.
A. (i) and (iv)
B. (ii) and (iii)
C. (i) and (ii)
D. (iii) and (iv)
Answer: Option B
24. The most commonly used retarder in cement is
A. Gypsum
B. Calcium chloride
C. Calcium carbonate
D. None of the above
Answer: Option A
25. In brick masonry the bond produced by laying alternate headers and stretchers in each course is known as
A. English bond
B. double flemish bond
C. zigzag bond
D. single flemish bond
Answer: Option B
26. Putty is
A. Made with finely powdered chalk and linseed oil
B. Used for fixing glass panes
C. Softened by a solution of pearl ash and quick-lime soaked in water
D. All the above
Answer: Option D
27. According to IS 399-1963, the weight of the timber is specified at
A. 8% moisture content
B. 10% moisture content
C. 12% moisture content
D. 14% moisture content
Answer: Option C
28. 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: Option B
29. A good quality stone absorbs water less than
A. 5 %
B. 10 %
C. 15 %
D. 25 %
Answer: Option A
30. Refractory bricks resist
A. High temperature
B. Chemical action
C. Dampness
D. All the above
Answer: Option A
31. Specific gravity for most of the building stones lies between
A. 1.5 to 2.0
B. 2.0 to 2.5
C. 2.5 to 3.0
D. 3.0 to 3.5
Answer: Option C
32. 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: Option D
33. Strength of cement concrete primarily depends upon
A. Quality of water
B. Quantity of aggregate
C. Quantity of cement
D. Water-cement ratio
Answer: Option D
34. 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: Option C
35. Durability of building stone is affected by its
A. Chemical composition
B. Texture
C. Resistance to atmosphere
D. All the above
Answer: Option D
36. Formula for quick lime, is
A. CaCO₃
B. Ca(OH)₂
C. CO₃CO₂
D. None to these
Answer: Option A
37. 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: Option A
38. Resins are
A. Not soluble in water
B. Soluble in spirit
C. Used in varnishes
D. Left behind on evaporation of oil
Answer: Option C
39. The ratio of the thickness of web to that of flange of steel rolled structural beams and channels is
A. Less than 1
B. Equal to 1
C. Greater than 1
D. Less than 1 in beams but greater than 1 in channels
Answer: Option A
40. Which of the following gradients exerts maximum influence on properties of steel?
A. iron
B. carbon
C. manganese
D. sulphur
Answer: Option B
Building Materials objective Questions PDF
41. For melting one tonne of cast iron
A. 700 m3 air is required
B. 20 kg limestone is required
C. One quintal coke is required
D. All the above
Answer: Option D
42. Sewer pipes are made of
A. Earthen ware
B. Stone ware
C. Refractory clay
D. All the above
Answer: Option B
43. Oil varnish generally consists of
A. Synthetic resin and spirit
B. Oil, wax and resin
C. Resin, oil and turpentine
D. Spirit, oil and wax
Answer: Option C
44. Plywood is normally available
A. 1 mm thick
B. 2 mm thick
C. 2 to 3 mm thick
D. 3 mm to 4 mm thick
Answer: Option D
45. 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: Option A
46. 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: Option B
47. Crushing strength of a good building stone should be more than
A. 50 MPa
B. 100 MPa
C. 150 MPa
D. 200 MPa
Answer: Option B
48. Spirit varnish generally consists of
A. Oil, wax and resin
B. Alcohol, wax and turpentine
C. Pigment and synthetic resin
D. Spirit and shellac
Answer: Option D
49. The vehicle used in case of enamel paints is usually
A. Linseed oil
B. Water
C. Varnish
D. None of the above
Answer: Option C
50. Which of the following ingredients of the brick earth enables the brick to retain its shape?
A. Alumina
B. Silica
C. Iron
D. Magnesia
Answer: Option B
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