A. 25 mm
B. 40 mm
C. 65 mm
D. 100 mm
✅ The correct answer is option C.
Building Materials and Construction MCQs
102. Specific gravity for most of the building stones lies between_____________?
A. 1.5 to 2.0
B. 2.0 to 2.5
C. 2.5 to 3.0
D. 3.0 to 3.5
✅ The correct answer is option C.
103. In which of the following pairs both trees yield soft wood ?
A. deodar and shishum
B. chir and sal
C. sal and teak
D. chir and deodar
✅ The correct answer is option D.
104. The type of roof which slopes in two directions with a break in the slope on each side is known as_____________?
A. gable roof
B. hip roof
C. gambrel roof
D. mansard roof
✅ The correct answer is option C.
105. Percentage of silica in a good brick earth lies between_______________?
A. 5 to 10%
B. 20 to 30%
C. 50 to 60%
D. 70 to 80%
✅ The correct answer is option C.
106. The ultimate tensile strength of structural mild steel is about_________________?
A. 160N/mm2
B. 260N/mm2
C. 420 N/mm2
D. 520 N/mm2
✅ The correct answer is option C.
107. Which of the following has more fire resisting characteristics ?
A. marble
B. lime stone
C. compact sand stone
D. granite
✅ The correct answer is option C.
108. According to IS specifications, the compressive strength of ordinary portland cement after three days should not be less than________________?
A. 7 MPa
B. 11.5 MPa
C. 16 MPa
D. 21 MPa
✅ The correct answer is option C.
109. Couple close roof is suitable for maximum span of________________?
A. 2.5 m
B. 3.5 m
C. 4.5 m
D. 5.5 m
✅ The correct answer is option C.
110. A mortar joint in masonry which is normal to the face of wall is known as_________________?
A. bed joint
B. wall joint
C. cross joint
D. bonded joint
✅ The correct answer is option C.