MCQ
26361. For the construction of retaining walls, a------stone must be used.
soft
hard
heavy
light
26362. The natural drying of bricks is also called back drying.
true
false
26363. The compressive strength of perforated bricks should not be less than-
4 MN/m²
5 MN/m²
6 MN/m²
7 MN/m²
26364. The size of mould for bricks should be---- the specified size of the bricks.
equal to
double
smaller than
larger than
26365. The percentage of water for making a cement paste of normal consistency varies from-
15 to 25%
25 to 35%
35 to 50%
50 to 60%
26366. The degree of grinding of cement is called-
fineness
impact value
soundness
bulking
26367. The frog of a brick is normally made on its-
longer face
bottom face
shorter face
top face
26368. উন্নত মানের বালু কখনোই ----থেকে আহরিত হয় না। [PPA-20]
নদী
নালা
সাগর
চর
26369. Initial setting time of ordinary Portland cement is-
15min
30min
60min
10hour
26370. ASTM No. 16 সিভের ওপেনিং সাইজ কত মিমি? [BWDB-20]
১.১৮ মিমি
১.৪০ মিমি
২.৩৬ মিমি
১.৭০ মিমি
কোনোটিই নয়
26371. The percentage of alumina in a good brick clay should vary from-
20 to 30%
30 to 40%
40 to 50%
50 to 60%
26372. The burning of bricks in kilns is completed within-----hours.
12
24
48
96
26373. দুটি বালির নমুনার ওজন ও FM যথাক্রমে 500 গ্রাম ও 750 গ্রাম এবং 2.5 ও 2.2 হলে তাদের Combined FM কত হবে? [BPSC-20]
2.4
2.38
2.42
2.32
26374. The average out-turn of first class bricks in clamp burning is about-
50%
60%
70%
80%
26375. The average out-turn of first class bricks in kiln burning is-
50 to 60%
60 to 70%
70 to 80%
80 to 90%
26376. The compressive strength of paving bricks should not be less than-
20 MN/m²
30 MN/m²
40 MN/m²
50 MN/m²
26377. For one cubic metre of brick masonry, the number of bricks required is-
400
450
500
550
26378. The inert mineral material used for 01-themanufacture of mortars and concrete is-
cement
aggregate
water
admixture
26379. Lime occurs in a free state in nature.
True
False
26380. For reinforced concrete, the aggregate used is-
sand
grave
crushed rock
all of these