MCQ
21. Main element of biogas is -
CO2
Water
Crowding
CH4
22. The open wells or dug wells are also known as-
shallow wells
draw wells
percolation
all of those
23. When first class brick is sunk 24 hours in water how much water will absorbed of its weight ?
1/3
1/6
1/4
1/7
24. The volume of cement in one bag is
1.00 cft
1.50 cft
1.25 cft
1.15 cft
26. What is the standard width of corrugated sheet?
85 cm
80 cm
70 cm
75 cm
27. Shallow tube well can pump water from a depth of -
20-25m
45-55m
40-50m
50-60m
28. The pile transfers load as a pier is-
Surface asphalt
lake asphalt
Rock asphalt
All of above
29. Which dam is suitable for hilly area?
dry hill
hydraulic hill
composite hill
none the above
30. What is the minimum temperature for burning of bricks?
300°-500°C
7000-1000° C
500°-700°
10000-1200°
31. If SPT of clayey soil is 2 then the soil is -
Soft
Medium
Hard
Stiff
32. Effective grain size of soil is-
D20
D40
D10
D50
33. Which pile acts as retaining wall?
Anchor pile
Felder pile
Bearing pile
Batter pile
34. Chain survey is most appropriate for
small place
Palin and open place
when plain needed for a large scale
all of above
35. What is the weight for 1 SQF RCC slab of thickness 0"-4"?
150 lb
100 lb
50 lb
60 lb
36. Number of bricks required for herring bone bond over 100 sq. area is _
5400
5200
5300
5600
37. What is the unit weight of cement?
1440 kg/cum
1620 kg/cum
1200 kg/cum
1500 kg/cum
38. Number of bricks require for 1 cubic meter of concrete work at 1:1.5:3 ratio is
300
350
246
346
39. How many number of bricks require for one cum. brick work?
420
400
406
415
40. What is the hook length for steel reinforcement of diameter d?
2d
9d
6d
16d