building materials and construction MCQs – Page 4

Practise focused building materials and construction questions with marked answers for exam preparation and subject revision.

building materials and construction Mcqs
61. Expansion Joints in masonry walls are provided in wall lengths usater than_______________?
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A. 30 m

B. 10 m

C. 20 m

D. 40 m
62. Pug mill is used for_______________?
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A. preparation of clay

B. moulding of clay

C. drying of bricks

D. burning of bricks

63. The main ingredients of Portland cement are________________?
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A. lime and iron

B. lime and silica

C. lime and alumina

D. silica and alumina

64. As per IS specifications, the maximum final setting time for ordinary Portland cement should be_______________?
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A. 1 hour

B. 10 hours

C. 6 hours

D. 30 minutes

65. Study the following statements. (1) Hydraulic lime is suitable for white washing, (2) Fat lime is suitable for whitewashing, (3) Hydraulic lime is suitable for making mortar, (4) Fat lime is suitable for making mortar. The correct answer is______________?
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A. (1) and (2)

B. (1) and (4)

C. (3) and (4)

D. (2) and (3)
66. With increase in moisture content, the bulking of sand_______________?
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A. increases

B. first decreases to a certain minimum value and then increases

C. first increases to a certain maximum value and then decreases

D. decreases

67. The main function of alumina in brick earth is_______________?
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A. to make the brick durable

B. to make the brick impermeable

C. to prevent shrinkage

D. to impart plasticity
68. Cross cut saw is used for_______________?
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A. dressing stones

B. cutting soft stones

C. cutting hard stones

D. cutting large blocks of stones

69. A first class brick when immersed in cold water for 24 hours should not absorb water more than______________?
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A. 22%

B. 15%

C. 20%

D. 25%

70. Percentage of silica in a good brick earth lies between_______________?
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A. 70 to 80%

B. 50 to 60%

C. 5 to 10%

D. 20 to 30%

71. Which of the following bricks are used for lining of furnaces ?
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A. refractory bricks

B. underburnt bricks

C. first class bricks

D. overburnt bricks

72. Plywood has the advantage of_____________?
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A. none of the above

B. greater tensile strength in longer direction

C. same tensile strength in all directions

D. greater tensile strength in shorter direction

73. Advantage of a clamp compared to a kiln for burning bricks is that_______________?
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A. it has less initial cost

B. it gives more output of first class bricks

C. it takes less time for burning

D. it is suitable when bricks are required in large numbers

74. The preparation of surface of stone to obtain plain edges or to obtain stones of required size and shape is known as______________?
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A. quarrying of stones

B. dressing of stones

C. seasoning of stones

D. blasting of stones

75. Hydraulic lime is obtained by_______________?
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A. calcination of pure clay

B. adding water to quick lime

C. burning of lime stone

D. burning of kankar
76. Which of the following stone is best suited for construction of piers and abutments of a railway bridge ?
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A. granite

B. lime stone

C. sand stone

D. quartzite

77. Which of the following cements is suitable for use in massive concrete structures such as large dams ?
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A. sulphate resisting cement

B. rapid hardening cement

C. low heat cement

D. ordinary Portland cement

78. Assertion A : Normally turpentine oil is recommended as thinner for indoor painting. Reason R : Turpentine oil is costlier than other thinners. Select your answer according to the coding system given below ?
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A. Both A and R are true and R is the correct explanation of A

B. Both A and R are 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

79. Based on the following rocks and minerals, select the correct statement, quartz, shale, basalt, granite, marble, gypsum, mica______________?
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A. quartz and mica are minerals

B. basalt and marble are the only metamorphic rocks

C. granite is the only igneous rock

D. there is no sedimentary rock

80. The maximum total settlement for raft foundation on clayey soils should be limited to______________?
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A. 25 mm

B. 40 to 65 mm

C. 65 to 100 mm

D. 25 to 40 mm