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Environmental Engineering

Environmental Engineering
The characteristics of fresh and septic sewage respectively are

Alkaline and acidic
Both alkaline
Both acidic
Acidic and alkaline

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Environmental Engineering
Sewage treatment units are normally designed for

28 - 30 years
15 - 20 years
15 - 28 years
5 - 10 years

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Environmental Engineering
The working conditions in imhoff tanks are

Aerobic in lower compartment and anaerobic in upper compartment
Anaerobic only
Aerobic only
anaerobic in lower compartment and aerobic in upper compartment

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

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

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Environmental Engineering
Laying of sewers is usually done with the help of

A plane table
Sight rails and boning rods
A compass
A Theodolite

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Environmental Engineering
As compared to shallow wells, deep wells have

More discharge
Less discharge
More depth
Less depth

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