Building Materials 1000+ MCQ with answer for FCI Recruitment

1. Which of the following is a rock?
A. Quartz
B. Mica
C. Gypsum
D. None of the above
Answer : C

2. Which of the following cements is suitable for use in massive concrete structures such as large dams?
A. Ordinary Portland cement
B. Low heat cement
C. Rapid hardening cement
D. Sulphate resisting cement
Answer : B

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

4. Asbestos
A. Is an excellent insulator for heat and electricity
B. Is fire-proof and acid proof
C. Has sp. gravity equal to 3.10
D. All the above
Answer : D

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

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

7. Plastic bitumen is generally used for
A. Road pavements
B. Expansion joints
C. Crack fillings
D. None to these
Answer : C

8. Bitumen is generally obtained from
A. Organic material
B. Synthetic material
C. Petroleum product
D. Coal
Answer : C

9. 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

10. Pick up the incorrect statement from the following:
A. Hydraulic lime is generally obtained by burning kankar
B. Hydraulic lime sets slowly as compared to fat lime
C. Hydraulic lime is generally used in lime mortar
D. None of these
Answer : D

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

12. The main constituent of fly-ash, is
A. Aluminium oxide
B. Silica
C. Ferrous oxide
D. All of these
Answer : D

13. Second class bricks
A. Are of dark brown colour
B. Produce a metallic sound when struck
C. Are well burnt
D. Are under burnt
Answer : B

14. Refractory bricks are
A. Neutral refractory bricks
B. Acid refractory bricks
C. Basic refractory bricks
D. All the above
Answer : D

15. Asbestos
A. Is a natural fibrous mineral substance
B. Is composed of hydrous silicates of calcium and magnesium (CaSiO₃, 3MgSiO₃)
C. Contains iron oxide and alumina
D. All the above
Answer : D

16. Percentage content of silica in window glass, is
A. 40 to 45
B. 50 to 55
C. 60 to 65
D. 70 to 75
Answer : D

17. In arches, stratified stones are placed so that their planes are
A. Parallel
B. Perpendicular
C. Radial
D. None of these
Answer : C

18. The softest rock is
A. Marble
B. Diamond
C. Talc
D. Quartz
Answer : C

19. 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

20. Pick up the correct statement from the following:
A. The theory of formation of concrete is based on the phenomena of formation of voids
B. The bulking of sand is taken into account while volumetric proportioning of the aggregates
C. The dry sand and the sand completely flooded with water, have practically the same volume
D. All the above
Answer : D

21. The pigment used in paints for corrosive resistance, is
A. White lead
B. Ferrous oxide
C. Zinc white
D. Red lead
Answer : D

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

23. Polymerization helps to improve the property of
A. Strength
B. Rigidity
C. Elasticity
D. All of these
Answer : D

24. Mastic asphalt is normally used for
A. Sound insulation
B. Water proofing
C. Fire proofing
D. None to these
Answer : B

25. The process of mixing clay, water and other ingredients to make brick is known as
A. Kneading
B. Moulding
C. Pugging
D. Drying
Answer : A

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

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

28. Advantage of a clamp compared to a kiln for burning bricks is that
A. It takes less time for burning
B. It gives more output of first class bricks
C. It has less initial cost
D. It is suitable when bricks are required in large numbers
Answer : C

29. The proportions of charcoal, saltpetre and sulphur in gun powder by weight, are respectively:
A. 15, 75, 10
B. 75, 10, 15
C. 10, 15, 75
D. 10, 75, 15
Answer : A

30. The operation of removal of impurities or clay adhering to iron ores, is known as
A. Dressing
B. Calcination
C. Roasting
D. Smelting
Answer : A

31. Minimum required water cement ratio for a workable concrete, is
A. 0.30
B. 0.40
C. 0.50
D. 0.60
Answer : B

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

33. 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

34. Ultimate strength to cement is provided by
A. Tri-calcium silicate
B. Di-calcium silicate
C. Tri-calcium aluminate
D. Tetra calcium alumino ferrite
Answer : B

35. 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

36. 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

37. The clay to be used for manufacturing bricks for a large project, is dugout and allowed to weather throughout
A. The monsoon
B. The winter
C. The summer
D. None of these
Answer : A

38. The most durable varnish is
A. Water varnish
B. Spirit varnish
C. Turpentine varnish
D. Oil varnish
Answer : D

39. 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

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

41. Upto a maximum of 72% of iron, is available in
A. Magnetite
B. Limonite
C. Siderite
D. Iron pyrites
Answer : A

42. Stones used for rubble masonry must be
A. Soft
B. Hard
C. Light
D. Heavy
Answer : B

43. 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

44. 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 : C

45. If P is the percentage of water required for normal consistency, water to be added for determination of initial setting time, is
A. 0.70 P
B. 0.75 P
C. 0.80 P
D. 0.85 P
Answer : D

46. Soundness test of cement determines
A. Quality of free lime
B. Ultimate strength
C. Durability
D. Initial setting
Answer : A

47. The kiln which may work throughout the year, is
A. Clamp
B. Bull's kiln
C. Hoffman's kiln
D. None of these
Answer : C

48. In stone masonry, if stones are so placed that their layers are parallel to the direction of load, they
A. Split easily
B. Are affected by moisture
C./strong> Both (A) and (B)
D. None of these
Answer : C