1000+ Building Materials MCQ for SSC Stenographer [Solved]

1. 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

2. 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

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

4. 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

5. Non acid-resistant asbestos is:
A. Tremolite asbestos
B. Chrysotile asbestos
C. Amosite asbestos
D. None of these
Answer : B

6. 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

7. 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

8. Wrought iron contains carbon about
A. 1.5% to 5.5%
B. 0.5% to 1.75%
C. 0.1% to 0.25%
D. None to these
Answer : C

9. The most commonly used synthetic abrasive is
A. Aluminium carbide
B. Boric acid
C. Silicon
D. All of these
Answer : D

10. 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

11. 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

12. In stone masonry, stones (stratified rocks) are so placed that the direction of pressure to the plane of bedding is
A. Right angles
B. 45°
C. 60°
D. Parallel
Answer : A

13. 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

14. Rapid hardening cement contains
A. Tri-calcium silicate
B. Tri-calcium aluminate
C. Tetra-calcium alumino-ferrite
D. Di-calcium silicate
Answer : A

15. Bitumen completely dissolves in
A. Carbon bisulphide
B. Chloroform
C. Coal tar
D. All of these
Answer : D

16. The portion of the brick cut across its width and having its length equal to that of a full brick, is known as
A. Closer
B. Queen closer
C. King closer
D. Prince closer
Answer : B

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

18. Plywood has the advantage of
A. Greater tensile strength in longer direction
B. Greater tensile strength in shorter direction
C. Same tensile strength in all directions
D. None of the above
Answer : C

19. 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

20. Pick up the correct statement from the following:
A. Hornblende mineral is brittle
B. Muscovite is also known as white mica and potash mica
C. Biotite is also known as black-mica
D. All the above
Answer : D

21. Teak wood is suitable for
A. Sports articles
B. Furnitures
C. Railway sleepers
D. All the above
Answer : B

22. 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

23. 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

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

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

26. 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

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

28. Minimum of 40% of iron, is available in
A. Magnetite
B. Red haematite
C. Limonite
D. Black band
Answer : D

29. The steel used in R.C.C. work is
A. Stainless steel
B. Mild steel
C. High carbon steel
D. Wrought iron
Answer : B

30. 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

31. 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

32. 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

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

34. Which of the following ingredients of the brick earth enables the brick to retain its shape?
A. Alumina
B. Silica
C. Iron
D. Magnesia
Answer : B

35. Pick up the correct statement from the following:
A. Bull's trench kiln a trench excavated in ground
B. Hoffman's kiln is constructed over ground
C. Tunnel Kiln is constructed as a tunnel
D. All the above
Answer : D

36. Pick up the correct statement from the following:
A. Lime is available in Free State
B. Lime is available by dissolving calcium carbonate in water
C. Lime is available by calcining calcium carbonate at 900°C
D. Lime is nothing but calcium chloride
Answer : C

37. The process of manufacturing steel by heating short lengths of wrought iron bars mixed with charcoal in fire clay crucibles and collecting the molten iron into moulds, is known as
A. Cementation process
B. Crucible process
C. Bessemer process
D. Open hearth process
Answer : B

38. For melting one tonne of cast iron
A. 700 m3 air is required
B. 20 kg limestone is required
C. One quintal coke is required
D. All the above
Answer : D

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

40. Pick up the correct statement from the following:
A. The plastic bottles are made by the process of blowing
B. The application of thermo-setting resins on sheets of paper, is called laminating process
C. The plastic articles made by placing raw material in the desired moulds, is known as moulding process
D. All the above
Answer : D

41. Which of the following is a mineral?
A. Basalt
B. Granite
C. Quartz
D. Syenite
Answer : C

42. Granite is not suitable for ordinary building purpose because
A. It cannot be polished
B. It is not a fire proof material
C. It is costly
D. It has less crushing strength
Answer : C

43. Granite mainly composed of quartz and feldspar particles, is obtained from
A. Sedimentary rocks
B. Metamorphic rocks
C. Igneous rocks
D. All the above
Answer : C

44. 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

45. Pick up the correct statement from the following:
A. Corrugated sheet iron is made by passing plain sheets between grooved rollers
B. Strength and stiffness of corrugated sheets are considerably increased
C. Corrugated sheets are generally used on slanting roofs
D. All the above
Answer : D

46. 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

47. The lime which contains mainly calcium oxide and slacks with water, is
A. Fat lime
B. Quick lime
C. Hydraulic lime
D. Poor lime
Answer : B

48. Mild steel is used for
A. Structural works in beams, joints and girders
B. Small sized water pipes
C. Columns and struts
D. None of these
Answer : A

49. 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

50. Sapwood consists of
A. Innermost annular rings around the pith
B. Portion of timber between heartwood and cambium layer
C. Thin layers below the bark
D. Thin fibre which extends from the pith outwards and holds the annular rings together
Answer : B