1000+ Building Materials Multiple Choice Question Answer [Solved]

1. 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

2. 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

3. Lacquer paints
A. Are generally applied on structural steel
B. Are less durable as compared to enamel paints
C. Consist of resin and nitro-cellulose
D. All the above
Answer : D

4. The specific gravity of marble, is
A. 2.50
B. 2.60
C. 2.66
D. 2.72
Answer : D

5. The frog of a brick is normally made on its
A. Top face
B. Bottom face
C. Longer face
D. Shorter side
Answer : A

6. 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

7. The percentage of alumina in a good brick earth lies between
A. 5 to 10 %
B. 20 to 30 %
C. 50 to 60 %
D. 70 to 80 %
Answer : B

8. A good brick earth should contain:
A. About 20% to 30% of alumina
B. About 50% to 60% of silica
C. Not more than 5% of lime
D. All the above
Answer : D

9. Plastics are compounds of carbon with element
A. Hydrogen
B. Nitrogen
C. Oxygen
D. All of these
Answer : D

10. The variety of pig iron used for the manufacture of steel by Bessemer process, is
A. Bessemer pig
B. Grey pig
C. White forge pig
D. Mottled pig
Answer : A

11. 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 : A

12. 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

13. The usual percentages of clay and metal in cermet are:
A. 50%, 50%
B. 60%, 40%
C. 70%, 30%
D. 80%, 20%
Answer : D

14. Initial setting of cement is caused due to
A. Tri-calcium silicate
B. Di-calcium silicate
C. Tri-calcium aluminate
D. Tetra calcium alumino ferrite
Answer : C

15. Refractory bricks resist
A. High temperature
B. Chemical action
C. Dampness
D. All the above
Answer : A

16. 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

17. A bull nose brick is not used for
A. Rounding off sharp corners
B. Pillars
C. Decoration purpose
D. Arches
Answer : D

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

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

20. Which of the following cements contains maximum percentage of dicalcium silicate?
A. Ordinary Portland cement
B. Low heat cement
C. Rapid hardening cement
D. Sulphate resisting cement
Answer : B

21. 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

22. Clay and silt content in a good brick earth must be at least
A. 50 %
B. 40 %
C. 30 %
D. 25 %
Answer : A

23. Pick up the correct statement from the following:
A. Plastics have generally low melting point
B. The coefficient of thermal expansion of plastics is about three times than that of steel
C. The acoustical boards prepared by impregnating fibre-glass with phenolic resins has absorption coefficient of about 0.67
D. All the above
Answer : D

24. Pick up the volcanic rock from the following:
A. Granite
B. Dolerite
C. Basalt
D. All the above
Answer : C

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

26. The basic purpose of a retarder in concrete is
A. To increase the initial setting time of cement paste in concrete
B. To decrease the initial setting time of cement paste in concrete
C. To render the concrete more water tight
D. To improve the workability of concrete mix
Answer : A

27. 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

28. 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 : C

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

30. The melting point of silica is:
A. 1570°C
B. 1630°C
C. 1730°C
D. 1850°C
Answer : C

31. The presence of sand in brick earth prevents:
A. Cracking of bricks
B. Shrinkage of bricks
C. Warping of bricks
D. None of these
Answer : C

32. Portland cement manufactured from pure white chalk and clay but free from iron-oxide, is known as
A. Quick setting cement
B. Rapid hardening cement
C. White cement
D. Low heat Portland cement
Answer : C

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

34. Pick up the correct statement from the following:
A. The distinct plane of division along which a stone can easily be split, is called natural bed of stone
B. The natural bed of sedimentary rocks is along the planes of stratification
C. The natural bed of igneous rocks is not defined
D. All the above
Answer : D

35. Pick up the correct statement from the following:
A. The phenol is carbolic acid
B. The phenol is either extracted from coal-tar or prepared from benzene
C. Phenol reacts with formaldehyde, to form phenol formaldehyde resin
D. All the above
Answer : D

36. 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

37. 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

38. To give a brilliant finish, the type of varnish used, is
A. Water varnish
B. Spirit varnish
C. Turpentine varnish
D. Oil varnish
Answer : B

39. The most important tool in brick laying for lifting and spreading mortar and for forming joints is
A. Trowel
B. Square
C. Bolster
D. Scutch
Answer : A

40. Pick up the correct statement from the following:
A. The low voltage porcelain is prepared by wet process
B. The high voltage porcelain is prepared by dry process
C. The low voltage porcelain is prepared by dry process
D. None of the above
Answer : C

41. Due to attack of dry rot, the timber
A. Cracks
B. Shrinks
C. Reduces to powder
D. None of these
Answer : C

42. Index number expressing the relative sizes of both coarse and fine aggregates, is called
A. Proportioning of aggregates
B. Fineness modulus
C. Grading of aggregates
D. None of these
Answer : B

43. Lime stones are generally known as
A. Aqueous rocks
B. Sedimentary rocks
C. Stratified rocks
D. All the above
Answer : D

44. Wrought iron is manufactured from pig iron by
A. Refining
B. Pudding
C. Shingling
D. All the above
Answer : D

45. Plywood is made from
A. Common timber
B. Bamboo fibre
C. Teak wood only
D. Asbestos sheets
Answer : C

46. Stones used for ornamental work must be
A. Soft
B. Hard
C. Light
D. Heavy
Answer : A

47. Compared to mild steel, cast iron has (i) High compressive strength (ii) High tensile strength (iii) Low compressive strength (iv) Low tensile strength The correct answer is
A. (i) and (ii)
B. (ii) and (iii)
C. (iii) and (iv)
D. (i) and (iv)
Answer : D

48. 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

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

50. 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