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Environmental Engineering

Environmental Engineering
Orthotolidine test is used for determination of

Dissolved oxygen
Residual chlorine
Dose of coagulant
Biochemical oxygen demand

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Environmental Engineering
The percentage of chlorine in fresh bleaching powder is about

10 to 15
20 to 25
40 to 50
30 to 35

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Environmental Engineering
For a country like India, where rainfall is mainly confined to one season, the suitable sewerage system will be

Partially combined system
Separate system
Combined system
Partially separate system

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Environmental Engineering
The rate of filtration in slow sand filters in million litres per day per hectare is about

500 to 600
50 to 60
100 to 150
1400 to 1500

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Environmental Engineering
The process of lagooning is primarily a means of

Increasing flow of sewage through imhoff tanks
Disposing of sludge
Increasing the capacity of storage reservoirs
Reducing the excessive flow in sewers

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Environmental Engineering
Dissolved oxygen in streams is

Maximum at midnight
Maximum at noon
Minimum at noon
Same throughout the day

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MORE MCQ ON Environmental Engineering

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