The drop man holes are generally provided in sewers for industrial areas large t

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Question
The drop man holes are generally provided in sewers for
Options
A. industrial areas
B. large town ships
C. hilly town ships
D. cities in plains.

Correct Answer

hilly town ships

Waste Water Engineering problems

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2. Pick up the correct statement from the following :
Options
A. Dimensional homogeneity means the dimensions of each term in an equation on both sides are equal
B. Dimensionally homogeneous equations are independent of the system of units
C. In dimensionally homogeneous equation, the powers of fundamental dimensions on either side of the equation are identical
D. All the above.

4. Hydraulic radius is equal to
Options
A. area divided by the square of wetted perimeter
B. area divided by wetted perimeter
C. wetted perimeter divided by area
D. square root of the area.

5. Discharge with velocity of approach, over a rectangular weir is
Options
A. C_d x L x 2g [(H + ha)^3/2 + ha^3/2]
B. C_d x L x 2g [(H + ha)^3/2 - ha^3/2]
C. C_d x L x 2g [(H - ha)^3/2 + ha^3/2]
D. C_d x L x 2g [(H - ha)^3/2 - ha^3/2]

8. The amount of oxygen consumed by the aerobic bacterias which cause the aerobic biological decomposition of sewage, is known
Options
A. Bio-Chemical Oxygen Demand (B.O.D.)
B. Dissolved Oxygen (D.O.)
C. Chemical Oxygen Demand (C.O.D.)
D. None of these.

9. Dry water flow in a combined sewer, is
Options
A. industrial sewage
B. domestic sewage
C. storm water
D. inclusive of domestic and industrial sewage but excludes storm water.

10. Pick up the correct statement from the following :
Options
A. Turbidity is more in strong sewage
B. The black colour indicates septic sewage
C. The fresh sewage is practically odourless
D. The sewage omits offensive odours after four hours
E. All the above.

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