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Environmental Engineering

Environmental Engineering
If Biochemical oxygen demand (BOD) of a town is 20000 kg/day and BOD per capita per day is 0.05 kg, then population equivalent of town is

4,00,000
4000
1,00,000
1000

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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

Combined system
Partially combined system
Separate system
Partially separate system

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Environmental Engineering
The design discharge for the combined sewer system shall be taken as

Rainfall + 2 DWF
Rainfall + 6 DWF
Equal to rainfall
Rainfall + DWF

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Environmental Engineering
If the time of concentration is 9 minutes, then the intensity of rainfall according to British Ministry of Health formula will be

10 mm/hr
40 mm/hr
4 mm/hr
20 mm/hr

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Environmental Engineering
The means of access for inspection and cleaning of sewer line is known as

Catch basin
Drop manhole
Manhole
Inlet

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Environmental Engineering
Which of the following chemical compounds can be used for de-chlorination of water?

Chloramines
Sulphur dioxide
Bleaching powder
Carbon dioxide

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MORE MCQ ON Environmental Engineering

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