1000+ Building Materials Multiple Choice Question Answer [Solved]

1. 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 : D

2. Pick up the correct statement from the following:
A. Blisters in the finished wrought iron, are caused due to the reaction between oxide of iron and carbon
B. The edges of a finished wrought iron are rough due to red shortage
C. Pig iron (charcoal) is manufactured from magnetic ore (Fe3O4)
D. All the above
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 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

5. With storage, strength of cement
A. Increases
B. Decreases
C. Remains the same
D. None to these
Answer : B

6. Quartzite is a
A. Metamorphic rock
B. Argillaceous rock
C. Calcareous rock
D. Siliceous rock
Answer : D

7. A well seasoned timber may contain moisture up to
A. 4 to 6 %
B. 6 to 8 %
C. 8 to 10 %
D. 10 to 12 %
Answer : D

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

9. 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

10. 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 : B

11. 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

12. The plastics made from cellulose resin
A. Are as clear as glass
B. Are tough and strong
C. Possess excellent electrical properties
D. All the above
Answer : D

13. The most commonly used base for timber painting, is
A. Red lead
B. Zinc white
C. White lead
D. Titanium white
Answer : C

14. Laterite is a/an
A. Volcanic rock
B. Argillaceous rock
C. Calcareous rock
D. Siliceous rock
Answer : B

15. Pick up the correct statement from the following:
A. For thin structures subjected to wetting and drying, the water cement ratio should be 0.45
B. For mass concrete structures subjected to wetting and drying, the water ratio should be 0.55
C. For thin structures which remain continuously under water, the watercement ratio by weight should be 0.55
D. All the above
Answer : D

16. The main constituent of cement which is responsible for initial setting of cement is
A. Di-calcium silicate
B. Tri-calcium silicate
C. Tri-calcium aluminate
D. All of the above
Answer : C

17. Which of the following represents a metamorphic rock? (i) Slate (ii) Shale (iii) Quartzite The correct answer is
A. Only (iii)
B. Both (i) and (iii)
C. Both (ii) and (iii)
D. All (i), (ii) and (iii)
Answer : B

18. Slacking of lime is affected by
A. Keeping it exposed to air
B. Immersing the lime in water
C. Crushing the lime lumps
D. None of these
Answer : B

19. In the cement the compound quickest to react with water, is
A. Tri-calcium aluminate
B. Tetra-calcium alumino-ferrite
C. Tri-calcium silicate
D. Di-calcium silicate
Answer : A

20. The commonly used thinner in oil paints, is
A. Naphtha
B. Turpentine
C. Both (a) and (b)
D. None the these
Answer : C

21. Sea sand used in structures causes
A. Dampness
B. Efflorescence
C. Disintegration
D. All of these
Answer : D

22. Which of the following stresses is used for identifying the quality of structural steel?
A. Ultimate stress
B. Yield stress
C. Proof stress
D. None of the above
Answer : B

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

24. Basalt is
A. Sedimentary rock
B. Metamorphic rock
C. Extrusive igneous rock
D. Intrusive igneous rock
Answer : C

25. In the method of condensation polymerization,
A. Low-molecular substances are removed from the high molecular substance
B. The reaction proceeds with an evolution of ammonia
C. The reaction proceeds with an evolution of hydrogen chloride
D. All of the above
Answer : D

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

27. During pudding
A. Molten metal is kept clear of the fuel
B. Carbon is converted into carbonic acid gas
C. Silicon forms a slag
D. All the above
Answer : D

28. Stucco paints are suitable for
A. Stone masonry
B. Brick walls
C. Both (A) and (B)
D. Neither (A) nor (B)
Answer : C

29. Pick up the correct statement from the following:
A. Air bubbles in casting produce a dull sound by tapping their surfaces lightly with a hammer
B. Cupola furnace is used for the manufacture of cast iron
C. Red short iron is of no value for welding purpose
D. All the above
Answer : D

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

31. The stretcher bond in brick masonry can be used only when the thickness of wall is
A. 90 mm
B. 180 mm
C. 190 mm
D. 280 mm
Answer : A

32. 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

33. The foliated structure is very common in
A. Sedimentary rocks
B. Igneous rocks
C. Metamorphic rocks
D. None of these
Answer : C

34. Pick up the constituent of good brick earth whose excess causes the raw bricks shrink and warp during drying and burning, from the following:
A. Alumina
B. Lime
C. Iron-oxide
D. Magnesia
Answer : A

35. 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

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

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

38. Kaolin is chemically classified as
A. Metamorphic rock
B. Argillaceous rock
C. Calcareous rock
D. Siliceous rock
Answer : B

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

40. Seasoning of timber is essential to remove
A. Knots from timber
B. Sap from timber
C. Twisted fibre from timber
D. Roughness of timber
Answer : B

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

42. 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

43. For preparing porcelains, the clay should be
A. Sufficiently pure
B. Of high degree of tenacity
C. Of good plasticity
D. All the above
Answer : D

44. Vanadium steel is generally used for
A. Railway switches and crossing
B. Bearing balls
C. Magnets
D. Axles and springs
Answer : D

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

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

47. 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

48. 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

49. Lime stone is not a
A. Sedimentary rock
B. Stratified rock
C. Aqueous rock
D. Metamorphic rock
Answer : D

50. Plastic asphalt is
A. Used as a water proofing layer over roof
B. A mixture of cement and asphalt
C. A natural asphalt
D. A refinery product
Answer : B