1000+ Building Materials Multiple Choice Question Answer [Solved]

1. Cast iron is used for
A. Structural works in beams
B. Small sized water pipes
C. Columns and struts
D. None to these
Answer : C

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

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

4. Pick up the rock which is not a sedimentary rock from the following:
A. Gravel
B. Sand stone
C. Gypsum
D. Dolerite
Answer : D

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

6. 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

7. 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

8. 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

9. Which one of the following polymers is obtained from condensation polymerization?
A. Phenol formaldehyde
B. Carbamide
C. Melamine-formaldehyde
D. All of these
Answer : D

10. The nominal size of the modular brick is
A. 190 mm × 90 mm × 80 mm
B. 190 mm × 190 mm × 90 mm
C. 200 mm × 100 mm × 100 mm
D. 200 mm × 200 mm × 100 mm
Answer : C

11. Resins are
A. Not soluble in water
B. Soluble in spirit
C. Used in varnishes
D. Left behind on evaporation of oil
Answer : C

12. Quartzite, a metamorphic stone is
A. Hard
B. Brittle
C. Crystalline
D. All the above
Answer : D

13. Varnish is a transparent or semi-transparent solution of resinous substances in
A. Alcohol
B. Linseed
C. Turpentine
D. All the above
Answer : D

14. The most important constituent of an oil paint, is
A. Thinner
B. Vehicle
C. Pigment
D. All the above
Answer : D

15. A good building stone should not absorb water more than
A. 5 %
B. 10 %
C. 15 %
D. 20 %
Answer : A

16. The main ingredients of Portland cement are
A. Lime and silica
B. Lime and alumina
C. Silica and alumina
D. Lime and iron
Answer : A

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

18. Pig iron is manufactured from the ores by
A. Dressing
B. Calcination and roasting
C. Smelting
D. All the above
Answer : D

19. The cracks caused by shrinkage of the exterior surface of the wood exposed to atmosphere, are called:
A. Radial shakes
B. Heart shakes
C. Wind cracks
D. Twisted fibres
Answer : C

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

21. Proper amount of entrained air in concrete results in (i) Better workability (ii) Better resistance to freezing and thawing (iii) Lesser workability (iv) Less resistance to freezing and thawing The correct answer is
A. (i) and (ii)
B. (i) and (iv)
C. (ii) and (iii)
D. (iii) and (iv)
Answer : A

22. For one cubic metre of brick masonry, number of bricks required, is
A. 400
B. 425
C. 450
D. 500
Answer : D

23. 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

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

25. The vehicle used in case of enamel paints is usually
A. Linseed oil
B. Water
C. Varnish
D. None of the above
Answer : C

26. The property by virtue of which lime sets under water, is known as
A. Slacking
B. Setting
C. Hydraulicity
D. Calcining
Answer : C

27. Depending on the chemical composition and mechanical properties, iron may be classified as
A. Cast iron
B. Wrought iron
C. Steel
D. All the above
Answer : D

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

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

30. Duco paints are
A. Plastic paints
B. Cellulose paints
C. Emulsion paints
D. Oil paints
Answer : D

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

32. The size of mould for bricks, is generally kept
A. A little large to specified size
B. A little small to specified size
C. Equal to specified size
D. 10% larger than specified size
Answer : A

33. 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

34. Pick up the correct statement regarding low heat cement from the following:
A. It possesses less compressive strength
B. Its initial setting time is about one hour
C. Its final setting time is about 10 hours
D. All the above
Answer : D

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

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

37. 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

38. 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

39. The rocks formed from molten magma, are called
A. Sedimentary rocks
B. Igneous rocks
C. Metamorphic rocks
D. None of these
Answer : B

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

41. For obtaining vinyl chloride acetate, the method used, is
A. Addition polymerization
B. Condensation polymerization
C. Co-polymerization
D. None of these
Answer : C

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

43. Quick lime is (i) Slow in setting (ii) Rapid in slacking (iii) Good in strength The correct answer is
A. Only (i)
B. Only (ii)
C. Both (i) and (ii)
D. Both (ii) and (iii)
Answer : C

44. Pick up the correct statement from the following:
A. The percentage of absorption for firebricks varies from 5 to 10
B. The percentage of silica in silica bricks is to the extent of about 95 to 97 percent
C. Roughly 1 to 2 percent of lime in silica bricks is added to act as binding material
D. All the above
Answer : D

45. Jhumb bricks are
A. Under burnt
B. Over burnt
C. Kutcha
D. None of these
Answer : B

46. 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

47. The plywood
A. Has good strength along the panel only
B. Can be spilt in the plane of the panel
C. Has greater impact resistance to blows than ordinary wood
D. Cannot be bent more easily than ordinary wood of same thickness
Answer : C

48. 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

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

50. Which of the following metamorphic rocks has the most weather resisting characteristics?
A. Marble
B. Quartzite
C. Slate
D. Lime stone
Answer : B