131. Quick lime is (1) slow in setting (2) rapid in slacking (3) good in strength The correct answer is____________?
A. only (1)
B. only (2)
C. both (1) and (2)
D. both (2) and (3)
✅ The correct answer is option C.
Building Materials and Construction MCQs
132. As per IS specifications, the maximum final setting time for ordinary Portland cement should be_______________?
A. 30 minutes
B. 1 hour
C. 6 hours
D. 10 hours
✅ The correct answer is option D.
133. The preparation of surface of stone to obtain plain edges or to obtain stones of required size and shape is known as______________?
A. quarrying of stones
B. blasting of stones
C. seasoning of stones
D. dressing of stones
✅ The correct answer is option D.
134. Based on the following rocks and minerals, select the correct statement, quartz, shale, basalt, granite, marble, gypsum, mica______________?
A. basalt and marble are the only metamorphic rocks
B. there is no sedimentary rock
C. granite is the only igneous rock
D. quartz and mica are minerals
✅ The correct answer is option D.
135. First class timber has an average life of_____________?
A. less than one year
B. 1 to 5 years
C. 5 to 10 years
D. more than 10 years
✅ The correct answer is option D.
136. Mansard roof is a roof which slopes in________________?
A. two directions without break in the slope on each side
B. two directions with break in the slope on each side
C. four directions without break in the slope on each side
D. four directions with break in the slope on each side
✅ The correct answer is option D.
137. In case of foundations on black cotton soils, the most suitable method to increase the bearing capacity of soils is to_________________?
A. increase the depth of foundation
B. drain the soil
C. compact the soil
D. replace the poor soil
✅ The correct answer is option D.
138. Plywood is made by bonding together thin layers of wood in such a way that the angle between grains of any layer to grains of adjacent layers is_________________?
A. 0°
B. 30°
C. 45°
D. 90°
✅ The correct answer is option D.
139. The function of king post in a king post roof truss is_______________?
A. to support the frame work of the roof
B. to receive the ends of principal rafter
C. to prevent the walls from spreading outward
D. to prevent the tie beam from sagging at its centre
✅ The correct answer is option D.
140. Compared to mild steel, cast iron has (1) high compressive strength (2) high tensile strength (3) low compressive strength (4) low tensile strength The correct answer is_________________?
A. (1) and (2)
B. (2) and (3)
C. (3) and (4)
D. (1)and(4)
✅ The correct answer is option D.