Building Materials MCQ Solved Paper for CLAT PG

1. 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

2. Which of the following stone is best suited for construction of piers and abutments of a railway bridge?
A. Granite
B. Sand stone
C. Lime stone
D. Quartzite
Answer : A

3. Seasoning of timber is done
A. To make it water proof
B. To paint its surface
C. To increase its temperature
D. To remove water
Answer : D

4. For a 50 kg cement bag water required, is
A. 16.5 litres
B. 18.5 litres
C. 20.5 litres
D. 22.5 litres
Answer : D

5. 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

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

7. The standard size of masonry bricks, is
A. 18 cm × 8 cm × 8 cm
B. 19 cm × 9 cm × 9 cm
C. 20 cm × 10 cm × 10 cm
D. 21 cm × 11 cm × 11 cm
Answer : B

8. Three basic raw materials which are needed in large quantities for production of steel are
A. Iron ore, coal and sulphur
B. Iron ore, carbon and sulphur
C. Iron ore, coal and lime stone
D. Iron ore, carbon and lime stone
Answer : C

9. Pick up the metal refractory from the following:
A. Molybdenum
B. Tungsten
C. Zirconium
D. All of these
Answer : D

10. Plywood is made by bonding together thin layers of wood in such a way that the angle between grains of any layer to grains of adjacent layers is
A. 0°
B. 30°
C. 45°
D. 90°
Answer : D

11. 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

12. A piece of timber whose thickness and width are respectively 5 cm and 10 cm is called
A. Slate
B. Plank
C. Board
D. Strip
Answer : D

13. The type of bond provided in brick masonry for carrying heavy loads is
A. Single Flemish bond
B. Double Flemish bond
C. English bond
D. Zigzag bond
Answer : C

14. Pick up the most favourable condition for the rapid growth of fungus for dry rot from the following:
A. Absence of sun light
B. Dampness
C. Presence of sap
D. All the above
Answer : D

15. 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

16. The minimum percentage of silica, alumina and ferric oxide in lime for white washing, is
A. 20
B. 15
C. 5
D. 0
Answer : D

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. The curved swellings from the growth of layers or wounds left after branches are cut off in an irregular manner are known as
A. Knots
B. Rindgalls
C. Burls
D. None of these
Answer : B

19. If the iron ore contains clay as an impurity, the flux added during calcination, is
A. Clay
B. Lime stone
C. Argillaceous iron ore
D. All the above
Answer : B

20. PVC stands for
A. Plastic very compact
B. Polythene vinyl chloride
C. Polythene vinyl carbon
D. Polythene vanadium carbide
Answer : B

21. After storage, the strength of cement
A. Decreases
B. Increases
C. Remains same
D. May increase or decrease
Answer : A

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

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

24. Pick up the synthetic resin from the following:
A. Urea resin
B. Phenolic resin
C. Resorcinol resin
D. All of these
Answer : D

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

26. The commonly used raw material in the manufacture of cement, is
A. Slate
B. Sand stone
C. Lime stone
D. Basalt
Answer : C

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

28. A stone is rejected if it absorbs water more than
A. 5 %
B. 10 %
C. 15 %
D. 20 %
Answer : B

29. Geologically, marble is known as
A. Sedimentary rock
B. Igneous rock
C. Metamorphic rock
D. Stratified rock
Answer : C

30. 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

31. 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

32. The main constituent which imparts hydraulicity to hydraulic lime is
A. Calcium oxide
B. Silica
C. Clay
D. Water
Answer : C

33. Snowcrete is one of the patent forms of
A. Distempers
B. Water proof cement paints
C. Enamel paints
D. Cellulose paints
Answer : B

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

35. 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

36. 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

37. 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 : C

38. 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

39. 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

40. If the furnace is provided with insufficient fuel at low temperatures, the type of pig iron produced, is called
A. Bessemer pig
B. Grey or foundry pig
C. White or forge pig
D. Mottled pig
Answer : C

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

42. The commonly used base for iron and steel work, is
A. Red lead
B. Zinc white
C. White lead
D. Titanium white
Answer : A

43. 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

44. Which one of the following is used for preparing porcelain?
A. Clay
B. Feldspar
C. Quartz
D. All of these
Answer : D

45. 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

46. 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

47. The PVC doors and windows are preferred as they are
A. Rust proof
B. Rot proof
C. Water proof
D. All of these
Answer : D

48. 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

49. The most common admixture which is used to accelerate the initial set of concrete is
A. Gypsum
B. Calcium chloride
C. Calcium carbonate
D. None of the above
Answer : B

50. Minimum thickness of wall where single Flemish bond can be used is
A. Half brick thick
B. One brick thick
C. One and a half bricks thick
D. Two bricks thick
Answer : C