Quiznetik

Basics of Civil Engineering | Set 1

1. The rocks formed due to solidification of molten mass are called.

Correct : D. igneous rocks

2. Granite is an example of

Correct : D. igneous rocks

3. Solidification of molten magma at the surface of the earth results in the formation of

Correct : B. basalt and traps

4. .Solidification of molten magma within the earth’s crust results in the formation of

Correct : C. granite

5. Sedimentary rocks are formed due to

Correct : B. gradual deposition of materials like sand, clay, generally by setting water

6. Under metamorphism, which of the following changes is correct?

Correct : D. all the above

7. Granite has

Correct : A. crystalline, glossy and fused texture

8. The principal constituent of argillaceous rock is

Correct : C. clay

9. Laterite is chemically classified as

Correct : D. argillaceous rock

10. Which of the following is an example of siliceous rock?

Correct : C. quartzite

11. Marble is an example of

Correct : B. metamorphic rock

12. Slate is used for

Correct : D. roofing

13. Which one of the following takes polish very well?

Correct : B. granite

14. The colour of granite is

Correct : D. all of these

15. A fine grained granite

Correct : D. all of the above

16. Siliceous sand subjected to metamorphic action is known as

Correct : C. quartzite

17. When quarrying is to be done in hard and compact rocks, the usual method employed is

Correct : C. blasting

18. Quarrying by using channeling machine is employed for quarrying in

Correct : A. soft rock

19. Heating technique of breaking rocks is suitable if the aim is to get

Correct : A. aggregates

20. The process of taking out stones of various sizes from natural rock is known as

Correct : D. quarrying

21. The process of giving required shape and size to stones is known as

Correct : A. dressing

22. Boasted finish of dressing stone is

Correct : A. making non-continuous parallel marks

23. Dressing of the stone is made

Correct : A. immediately after quarrying

24. The most powerful explosive used in blasting is.

Correct : B. guncotton

25. Moisture absorption of a good stone should be less than

Correct : B. 5%

26. Most of the stones possess the specific gravity in the range of

Correct : C. 2.4 – 2.8

27. Limestone used for manufacture of cement is

Correct : A. kankar

28. Which of the following has the highest crushing strength?

Correct : D. trap

29. Which of the following stone has the highest resistance to fire?

Correct : D. argillaceous material

30. Smith’s test on stone is to check

Correct : D. presence of muddy substance

31. Los Angeles testing machine is used to find the following. In stone

Correct : A. surface wear

32. Impact value of stone for road work specified are

Correct : D. all the above

33. Deterioration of stones takes place due to

Correct : D. all of the above

34. Which one of the follo ing is not a preservative of stone

Correct : D. ASCU

35. After felling and separating branches the tree is known as

Correct : C. rough timber

36. Which one of the following does not belong to exogenous tree

Correct : C. mahogany

37. Which one of the following dose not belong to endogenous trees

Correct : C. bamboo

38. On the basis of durability test, Forest Research Institute of India, Dehradun, a tree is highly durable if its average life is more than

Correct : B. 10 years

39. The trees, of which leaves fall in autumn and new ones appear in spring are classified as

Correct : B. deciduous trees

40. The oldest part of exogenous tree is

Correct : A. pith

41. Age of exogenous tree can be judged from

Correct : B. annual rings

42. The layer between the dark and sapwood which is yet to be converted into wood is known as

Correct : D. cambium layer

43. Which one of the following is softwood

Correct : A. deodar

44. Which one of the following is not a softwood:

Correct : A. oak

45. On the basis of availability, timber is classified as

Correct : D. , Y, Z Class

46. Seasoning makes timber

Correct : D. all of the above

47. Which of the following statements is not correct?

Correct : C. kiln seasoning is superior to natural seasoning.

48. Most economical method of sawing wood is

Correct : A. ordinary sawing

49. Sections of more uniform moisture content are obtained by

Correct : B. quarter sawing

50. The defect in timber due to broken branch of the tree during the tree growth is

Correct : A. knot

51. Stain appears in wood due to

Correct : B. contact with water and chemicals for long time

52. Honeycomb and cracks may occur in timber due to

Correct : B. erroneous seasoning

53. Which one of the following is not a preservative of timber

Correct : D. solution of barium hydroxide

54. A thin sheet of wood sliced from log is called

Correct : C. veneer

55. In a plywood the veneers are placed such that the gra ns of a layer are

Correct : C. at right angles to the layer below it

56. Plywood is identified by

Correct : D. thickness

57. An assembled product made up of veneers and adhesives is called

Correct : D. plywood

58. Particle boards are manufactured by using

Correct : A. chips of wood, rice husk and bagasse

59. The wood that cannot be attacked by white ants is

Correct : D. teak

60. The standard size of bricks as per Indian Standards is

Correct : C. 190 × 90 × 90 mm

61. Red colour of brick is due to the pre ence of

Correct : D. iron oxide

62. Excess of lime in the brick earth makes the bricks

Correct : C. melt and lose shape

63. Excess of iron oxide in brick earth makes the bricks

Correct : B. darker

64. Alumina in brick earth gives the bricks

Correct : C. plasticity

65. Excess of alkalies in the brick earth results into

Correct : B. white patches

66. Pug mill is used to

Correct : B. tempering

67. The size of mould used for making bricks compared to size of brick is

Correct : A. 10% more

68. Pallet board is used to

Correct : B. to mount the mould

69. In stiff mud process of machine moulding, water used for mixing is

Correct : B. 12–18%

70. Gradual drying of moulded bricks is necessary to

Correct : B. permit shrinkage without cracking

71. The brick is considered dry when the moisture content is

Correct : C. 2%

72. Hand moulded bricks take ______ days for drying while stiff-mud machine made bricks ______ days.

Correct : B. 15, 2

73. The indentation mark left on bricks during the process of moulding are

Correct : D. frog

74. Which one of the following statements is wrong about clamp burning

Correct : C. control on burning process is good

75. Continuous kiln is

Correct : D. all of the above

76. The minimum strength of brick required for building wall is

Correct : C. 3.5 N/mm2

77. To check the size of brick number of bricks to be kept side by side is

Correct : B. 20

78. The bricks which may be used to build wall but to be provided with plaster are

Correct : B. IInd Class

79. The compressive strength of high duty bricks should be more than

Correct : A. 40 N/mm2

80. Thickness of web of hollow bricks should not be less than

Correct : D. 8 mm

81. Compressive strength of paving bricks should not be less than

Correct : A. 40 N/mm2

82. Field test for strength of good bricks is to drop it from a height of ______ and they should not break

Correct : B. 1.0 m

83. For making stabilized soil brick the soil is stabilized with

Correct : C. cement

84. Refractory bricks resist

Correct : A. high temperature

85. In case of round tiles, under-tiles are used with their narrow ends

Correct : A. towards eve

86. Maximum water absorption permitted on class AA type Mangalore tiles is

Correct : D. 19%

87. Which of the following statement is wrong?

Correct : B. Pan tiles are weaker than half round tiles

88. Terracotta means

Correct : D. baked earth

89. Water absorption of vitrified tiles is not more than

Correct : A. 0.5%

90. To make terracotta porous, the following is mixed with clay before burning.

Correct : C. sawdust

91. By calcining and smelting iron ores, a crude and impure form of iron obtained is known as

Correct : D. pig iron

92. The colour of cast iron is

Correct : C. both grey and white

93. The compressive and tensile strength of cast iron are

Correct : A. 700 N/m2 and 150 N/mm2

94. For making spiral staircases, ideal material is

Correct : B. cast iron

95. Purest form of iron is

Correct : C. wrought iron

96. Carbon content in wrought iron is

Correct : A. 0.15%

97. The ratio of tensile strength to compressive strength of steel is

Correct : B. equal to 1

98. Ribs are made on steel wires to increase

Correct : C. bond strength

99. The property of metal enabling it to be drawn into thin weir is known as

Correct : B. ductility

100. Non-ferrous Materials

Correct : D. tubes