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Environmental Engineering

Environmental Engineering
Sewerage system is usually designed for

27 years
28 years
26 years
25 years

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Environmental Engineering
An egg shaped section of sewer

Provides self cleansing velocity at low discharges
Is economical than circular section
Is more stable than circular section
Is easy to construct

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

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

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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 separate system
Partially combined system
Separate system
Combined system

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Environmental Engineering
Which of the following retards the self purification of stream?

None of these
Higher temperature
Satisfying oxygen demand
Sunlight

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Environmental Engineering
Which of the following compounds is widely used for algae control?

Sodium chloride
Calcium chloride
Sodium sulphate
Copper sulphate

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MORE MCQ ON Environmental Engineering

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