71. Which of the following is a mineral ?
A. basalt
B. granite
C. quartz
D. syenite
✅ The correct answer is option C.
Building Materials and Construction MCQs
72. Addition of pozzolana to ordinary Portland cement increases__________________?
A. bleeding
B. shrinkage
C. permeability
D. heat of hydration
✅ The correct answer is option B.
73. Jumper is a tool used for_______________?
A. testing of stones
B. quarrying of stones
C. dressing of stones
D. none of the above
✅ The correct answer is option B.
74. Granite is not suitable for ordinary building purpose because_______________?
A. it can not be polished
B. it is not a fire proof material
C. it is costly
D. it has less crushing strength
✅ The correct answer is option C.
75. Which of the following pairs gives a correct combination of the useful and harmful constituents respectively of a good brick earth ?
A. lime stone and alumina
B. silica and alkalies
C. alumina and iron
D. alkalies and magnesium
✅ The correct answer is option B.
76. The maximum number of steps in a flight should generally be restricted to______________?
A. 10
B. 12
C. 15
D. no limit
✅ The correct answer is option B.
77. The main constituent of cement which is responsible for initial setting of cement is_________________?
A. dicalcium silicate
B. tricalcium silicate
C. tricalcium aluminate
D. all of the above
✅ The correct answer is option C.
78. The maximum quantity of calcium chloride used as an accelerator in cement in percentage by weight of cement is_______________?
A. 1
B. 2
C. 3
D. 4
✅ The correct answer is option B.
79. Which of the following cements is suitable for use in massive concrete structures such as large dams ?
A. ordinary Portland cement
B. low heat cement
C. rapid hardening cement
D. sulphate resisting cement
✅ The correct answer is option B.
80. The amount of water used for one kg of distemper is_____________?
A. 0.2 liter
B. 0.4 liter
C. 0.6 liter
D. 0.8 liter
✅ The correct answer is option C.