Quiznetik

Building Materials | Set 6

1. A good brick earth should contain

Correct : D. All the above.

2. The commonly used lime in white washing, is

Correct : B. fat lime

3. Pick up the plutonic rock from the following

Correct : A. Granite

4. Seasoning is

Correct : A. a process of removing sap

5. Rocks formed due to alteration of original structure due to heat and excessive pressure are

Correct : C. metamorphic rocks

6. The compound of Portland cement which contributes strength after two to three years is

Correct : B. Di-calcium silicate

7. For slaking of 10 kg of CaO, the theoretical amount of water is

Correct : C. 3.2 kg

8. Bessemer process is used for the manufacture of

Correct : D. Steel.

9. The portion of the brick without a triangular corner equal to half the width and half the length, is called

Correct : C. king closer

10. The standard size of masonry bricks, is

Correct : B. 19 cm x 9 cm x 9 cm

11. A good quality stone absorbs water less than

Correct : A. 5%

12. Plywood is made from

Correct : C. teak wood only

13. If the iron ore contains clay as an impurity, the flux added during calcination, is

Correct : B. lime stone

14. Cast steel is manufactured by

Correct : B. Crucible process

15. 1st class brick immersed in water for 24 hours, should not absorb water (by weight) more

Correct : C. 20%

16. Geologically, marble is known as

Correct : C. metamorphic rock

17. The commonly used drying oil for oil paints, is

Correct : D. accetate of lead.

18. The foliated structure is very common in

Correct : C. metamorphic rocks

19. Turpentine oil is used in paints as

Correct : A. thinner

20. The hardest rock is

Correct : B. diamond

21. The silica is used for preparing

Correct : D. All of these.

22. Fibre boards can be

Correct : D. Used for furniture.

23. Pick up the correct statement from the following

Correct : D. All the above.

24. Formula for quick lime, is

Correct : B. CaO

25. For the manufacture of stainless steel, steel is mixed with

Correct : A. chromium

26. Stones used for ornamental work must be

Correct : A. soft

27. The operation of removal of impurities or clay adhering to iron ores, is known as

Correct : A. dressing

28. If water required for 1 bag of cement is 30 liters, the water cement ratio is

Correct : C. 0.60

29. Portland cement manufactured from pure white chalk and clay, free from iron-oxide, known as

Correct : C. white cement

30. Dry rot

Correct : C. reduces the timber to powder

31. Which one of the following polymers is obtained from condensation polymerization ?

Correct : D. all of these.

32. The weight of 1 m3 of brick earth, is about

Correct : C. 1800 kg

33. Pozzolana (or surkhi) is used in lime

Correct : A. to impart hydraulicity

34. Mastic asphalt is normally used for

Correct : B. water proofing

35. Lime stone is not a

Correct : D. metamorphic rock.

36. A piece of timber whose thickness and width are respectively 5 cm and 10 cm is called

Correct : D. Strip.

37. Pig iron is manufactured from the ores by

Correct : D. all the above.

38. The maximum permissible colour for domestic supplies based on cobalt scale, is

Correct : D. 20 ppm

39. The portion of a brick cut to form angles other than right angles in plan, is known as

Correct : D. squint brick.

40. Plywood is obtained by gluing wooden sheets at

Correct : C. both (a) and (b)

41. The low voltage porcelain is mainly used for

Correct : D. All of these.

42. Putty is

Correct : D. all the above.

43. PVC stands for

Correct : B. polythene vinyl chloride

44. Generally wooden mounds are made from

Correct : B. shisham wood

45. The cement becomes unsound by the presence of excess

Correct : D. All of these.

46. A volatile substance added to a paint to make its application easy and smooth, is known as

Correct : B. solvent

47. The main ingredient of a good quality brick earth, is

Correct : D. Alumina.

48. Bitumen is generally obtained from

Correct : C. petroleum product

49. The steel which contains fissures and cavities, is manufactured by

Correct : A. Cementation process

50. Pick up the volcanic rock from the following

Correct : C. Basalt

51. In stone masonry, stones (stratified rocks) are so placed that the direction of pressure to the plane of bedding is

Correct : A. right angles

52. Softer variety of steel may be obtained by

Correct : C. Bessemer process

53. Strength of cement concrete primarily depends upon

Correct : D. Water-cement ratio.

54. Rapid hardening cement contains

Correct : A. Tri-calcium silicate

55. Bitumen emulsion is

Correct : D. all the above.

56. Jhumb bricks are

Correct : B. over burnt

57. Plastic bitumen is generally used for

Correct : C. crack fillings

58. The commonly used thinner in oil paints, is

Correct : C. both (a) and (b)

59. In a rock calcium carbonate predominates. State whether it is

Correct : C. Calcareous rock

60. A well-seasoned timber may contain moisture up to

Correct : D. 10 to 12%.

61. The stones obtained by blasting are used as

Correct : D. All the above.

62. Distemper is

Correct : A. a paint consisting of powdered chalk, pigments, and water

63. Pick up the correct statement from the following

Correct : D. All the above.

64. The cracks which extend from bark towards the sap wood in the cross section of a tree, are called

Correct : B. star shakes

65. Sea sand used in structures causes

Correct : D. All of these.

66. Refractory bricks resist

Correct : A. high temperature

67. When a brick is immersed in water for 24 hours and then dried, if

Correct : D. All the above.

68. In arches, stratified stones are placed so that their planes are

Correct : C. radial

69. The fire clay contains pure

Correct : C. hydrated aluminum silicate

70. The steel used for rails under heavy traffic and on sharp curves, is

Correct : C. Magnese steel

71. Oil varnish generally consists of

Correct : C. resin, oil and turpentine

72. The cracks which extend from bark towards the sap wood in the cross section of a tree, are

Correct : B. star shakes

73. The compound of Portland cement which reacts immediately with water and sets first is

Correct : C. Tri-calcium aluminate

74. The fire clay contains pure

Correct : D. magnesium.

75. The rocks which are formed due to cooling of magma at a relatively shallow depth from the earth's surface are called

Correct : B. Hypabyssal rocks

76. The base material for distemper, is

Correct : A. chalk

77. The thermosetting plastic

Correct : D. All the above.

78. Slacking of lime is affected by

Correct : B. immersing the lime in water

79. The steel used in R.C.C. work is

Correct : B. mild steel

80. Mastic asphalt is

Correct : D. all the above.

81. Stones used for the construction of retaining walls must be

Correct : D. heavy.

82. Plastics are compounds of carbon with element

Correct : D. All of these.

83. Pick up the constituent of good brick earth whose excess causes the raw bricks shrink and warp during drying and burning, from the following:

Correct : A. Alumina

84. Cast iron is used for

Correct : C. columns and struts

85. For a good building stone, its specific gravity should the greater than

Correct : D. 2.7.

86. The most important constituent of varnish, is

Correct : D. all the above.

87. A ferrous metal is

Correct : D. all the above.

88. For making fly-ash building bricks, the following mix of fly-ash, sand and lime, is

Correct : A. 80 : 13 : 7

89. Seasoning of timber is done

Correct : D. to remove water.

90. The rocks having alumina or clay as their major constituents, are known as

Correct : B. argillaceous rocks

91. The tendency of a stone is, to split along

Correct : C. cleavage

92. Acrylic is the name of

Correct : C. methyl metha crylate

93. Glazing of clay products, is done

Correct : D. all the above.

94. The most dangerous pollutant in vehicular emissions is

Correct : A. CO

95. Steel contains carbon approximately

Correct : B. 0.05% to 1.75%

96. Cast iron contains carbon approximately

Correct : A. 1.5% to 5.5%

97. Plastic asphalt is

Correct : B. a mixture of cement and asphalt

98. Good quality cement contains higher percentage of

Correct : A. Tricalcium silicate

99. The softest rock is

Correct : C. talc

100. Mild steel is used for

Correct : A. structural works in beams, joints and girders