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Environmental Engineering

Environmental Engineering
The pipe which is used to carry the discharge from sanitary fittings like bath rooms, kitchens etc. is called

Vent pipe
Soil pipe
Anti-siphonage pipe
Waste pipe

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Environmental Engineering
The alum, when added as a coagulant in water

Does not require alkalinity in water for flocculation
Increases pH value of water
Decreases pH value of water
Does not affect pH value of water

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Environmental Engineering
Air binding phenomena in rapid sand filters occur due to

Low temperature
Excessive negative head
Mud ball formation
Higher turbidity in the effluent

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Environmental Engineering
Septic tank is a (i) Settling tank (ii) Digestion tank (iii) Aeration tank

Only (i)
Only (iii)
(i) and (ii)
(i) and (iii)

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Environmental Engineering
Turbidity is measured on

Standard cobalt scale
Platinum cobalt scale
Standard platinum scale
Standard silica scale

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Environmental Engineering
The dissolved oxygen level in natural unpolluted waters at normal temperature is found to be of the order of

10 mg/liter
1000 mg/liter
1 mg/liter
100 mg/liter

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MORE MCQ ON Environmental Engineering

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