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Waste Water Engineering

Waste Water Engineering
Pathogens (or pathogenic bacterias) in water may cause

Cholera
Typhoid
Dysentery
All listed here

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Waste Water Engineering
To test chemical oxygen demand (C.O.D.) of sewage, organic matter is oxidised by potassium dichromate in the presence of

Sulphuric acid
Citric acid
Nitric acid
Hydrochloric acid

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Waste Water Engineering
Clogging of sewers, is caused due to

Low discharge
Greasy and oily matters
Silting
All of these

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Waste Water Engineering
In a sedimentation tank (length L, width B, depth D) the settling velocity of a particle for a discharge Q, is

Q/(L × D)
Q/L
Q/(B × L)
Q/(B × D)

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Waste Water Engineering
If is the diameter of upper circular portion, the overall depth of New Egg shaped sewer section, is

1.250 D
1.350 D
1.425 D
1.625 D

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Waste Water Engineering
Pick up the incorrect size of stone ware sewers

67.5 cm
52.5 cm
None of these
82.5 cm

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MORE MCQ ON Waste Water Engineering

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