231. Addition of pozzolana to ordinary Portland cement increases__________________?
A. bleeding
B. shrinkage
C. permeability
D. heat of hydration
✅ The correct answer is option B.
Civil Engineering
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232. 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.
233. 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.
234. 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.
235. 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.
236. 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.
237. 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.
238. 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.
239. 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.
240. A queen closer is a______________?
A. brick laid with its length parallel to the face or direction of wall
B. brick laid with its breadth parallel to the face or direction of wall
C. brick having the same length and depth as the other bricks but half the breadth
D. brick with half the width at one end and full width at the other
✅ The correct answer is option C.