1000+ Building Materials MCQ for SSC CHSL [Solved]

1. 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

2. Proper amount of entrained air in concrete results in (i) Better workability (ii) Better resistance to freezing and thawing (iii) Lesser workability (iv) Less resistance to freezing and thawing The correct answer is
A. (i) and (ii)
B. (i) and (iv)
C. (ii) and (iii)
D. (iii) and (iv)
Answer : A

3. The type of steel used for precision levelling staff, is
A. Titanium steel
B. Carbon steel
C. Invar
D. Stainless steel
Answer : C

4. The rocks in which argil (or clay) predominates, are called
A. Siliceous rocks
B. Argillaceous rocks
C. Calcareous rocks
D. Igneous rocks
Answer : B

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

6. To retard the initial setting time of cement, the compound responsible, is
A. Tri-calcium silicate
B. Gypsum
C. Di-calcium silicate
D. Tri-calcium aluminate
Answer : B

7. 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

8. The rocks which are formed due to cooling of magma at a relatively shallow depth from the earth's surface are called
A. Plutonic rocks
B. Hypabyssal rocks
C. Volcanic rocks
D. Igneous rocks
Answer : B

9. Which one of the following is acid resistant asbestos?
A. Actinolite asbestos
B. Amosite asbestos
C. Anthophylite asbestos
D. All the above
Answer : D

10. Dextrin is
A. Animal glue
B. Starch glue
C. Albumin glue
D. Rubber based adhesive
Answer : D

11. Pick up the correct statement from the following:
A. Slaked lime contains calcium hydroxide
B. Quick lime contains calcium oxide
C. Slaked lime may be obtained from quick lime
D. All the above
Answer : D

12. Soundness of cement is tested by
A. Vicat's apparatus
B. Le-chatelier apparatus
C. Compressive strength testing apparatus
D. None of these
Answer : B

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

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

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

16. With increase in moisture content, the bulking of sand
A. Increases
B. Decreases
C. First increases to a certain maximum value and then decreases
D. First decreases to a certain minimum value and then increases
Answer : C

17. 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

18. 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

19. Asbestos cement
A. Is brittle
B. Warps due to changes in humidity
C. Strength is lowered when saturated by water
D. All of the above
Answer : D

20. 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

21. Cast iron contains carbon approximately
A. 1.5% to 5.5%
B. 0.05% to 1.75%
C. 0.250 %
D. None to these
Answer : A

22. 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

23. The rock which are formed due to cooling of magma at a considerable depth from earth's surface are called
A. Plutonic rocks
B. Hypabyssal rocks
C. Volcanic rocks
D. Igneous rocks
Answer : A

24. The portion of a brick cut to form angles other than right angles in plan, is known as
A. Queen closer
B. King closer
C. Closer
D. Squint brick
Answer : D

25. The base material for distemper, is
A. Chalk
B. Lime
C. Lime putty
D. Cement wash
Answer : A

26. Assertion A : Paints with white lead base are not recommended for painting of iron works. Reason R : Paints with white lead base do not check rusting of iron. Select your answer according to the coding system given below:
A. Both A and R is true and, R is the correct explanation of A
B. Both A and R is true but R is not the correct explanation of A
C. A is true but R is false
D. A is false but R is true
Answer : A

27. Slate is formed by metamorphic action on
A. Shale
B. Lime stone
C. Sand stone
D. Granite
Answer : A

28. Pick up the polymineralic rock from the following:
A. Quartz sand
B. Pure gypsum
C. Magnesite
D. Granite
Answer : D

29. Cast iron
A. Is obtained by purifying pig iron
B. Is manufactured in required shapes
C. May contain 2 to 5 per cent of carbon with other impurities
D. All the above
Answer : D

30. 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

31. For one cubic metre of brick masonry, number of bricks required, is
A. 400
B. 425
C. 450
D. 500
Answer : D

32. For a good building stone, its specific gravity should the greater than
A. 1.5
B. 1.7
C. 2.2
D. 2.7
Answer : D

33. 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

34. Which one of the following is an air binding material?
A. Gypsum
B. Acid-resistant cement
C. Quick lime
D. All of these
Answer : D

35. The presence of original rounded surface on the manufactured piece of timber, is called
A. Wane
B. Torn grain
C. Diagonal grain
D. Chipmark
Answer : A

36. The steel which contains fissures and cavities, is manufactured by
A. Cementation process
B. Crucible process
C. Bessemer process
D. Open hearth process
Answer : A

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

38. The wedging is adopted for quarrying costly stratified rock such as
A. Laterite
B. Marble
C. Limestone
D. All the above
Answer : D

39. Pick up the correct statement from the following:
A. Alexander Parkes, a Scottish chemist prepared a hard material by mixing camphor and alcohol with nitro cellulose and called it, as Parkesite
B. Dr. L. Bakeland, a Belgian scientist prepared a product known as Bakelite
C. Pollark, an Austrian scientist prepared a substance from urea and formaldehyde and called it Plastic
D. All the above
Answer : D

40. The minimum compressive strength of 2nd class bricks should be
A. 75 kg/cm²
B. 90 kg/cm²
C. 100 kg/cm²
D. 120 kg/cm²
Answer : A

41. Generally wooden moulds are made from
A. Ply wood
B. Shishum wood
C. Deodar wood
D. Teak wood
Answer : B

42. The commonly used lime in white washing, is
A. White lime
B. Fat lime
C. Hydraulic lime
D. Quick lime
Answer : B

43. The normal consistency of ordinary Portland cement is about
A. 10 %
B. 20 %
C. 30 %
D. 40 %
Answer : C

44. Pig iron obtained from the furnace which is properly provided with fuel at a very high temperature, is called
A. Bessemer pig
B. Grey or foundry pig
C. White or forge pig
D. Mottled pig
Answer : B

45. 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

46. Commonly used thinner in
A. Lacquer paints, is alcohol
B. Cellulose paints is ethyl acetate
C. Oil paints, is naphtha
D. All the above
Answer : D

47. Pick up the correct statement from the following:
A. Blistering may be cured by applying water paint finished with oil paint dried with a little copal varnish
B. Cracked paints may be cured by removing paint and giving a fresh coat of paint
C. Crawling paints may be cured by sand preparing the surface and giving a fresh coat with plenty of turps
D. All the above
Answer : D

48. 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

49. Veneering means
A. Carving out designs on timber planks
B. Chemically treating timber planks
C. Thick layer of superior wood glued to inferior wood
D. Thin layer of superior wood glued to inferior wood
Answer : C

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