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Environmental Engineering

Environmental Engineering
Orthotolidine test is used for determination of

Residual chlorine
Biochemical oxygen demand
Dose of coagulant
Dissolved oxygen

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Environmental Engineering
The minimum and maximum diameters of sewers shall preferably be

15 cm and 300 cm
15 cm and 100 cm
60 cm and 300 cm
30 cm and 450 cm

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Environmental Engineering
The type of sewer which is suitable for both combined and separate system is

Semi-elliptical sewer
Horseshoe type sewer
Egg shaped sewer
Circular sewer

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Environmental Engineering
The overflow rate for plain sedimentation tanks is about

1500 to 2000 liters/hour/m²
1250 to 1500 liters/hour/m²
1000 to 1250 liters/hour/ m²
500 to 750 liters/hour/ m²

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Environmental Engineering
The treatment of water with bleaching powder is known as

Hypo-chlorination
De-chlorination
Super chlorination
Pre-chlorination

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Environmental Engineering
In water treatment, rapid gravity filters are adopted to remove

Floating solids and dissolved inorganic solids
Bacteria and colloidal solids
Dissolved organic substances
Dissolved solids and dissolved gases

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MORE MCQ ON Environmental Engineering

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