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Environmental Engineering

Environmental Engineering
Orthotolidine test is used for determination of

Biochemical oxygen demand
Dose of coagulant
Residual chlorine
Dissolved oxygen

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Environmental Engineering
The settling velocity of a particle in a sedimentation tank depends on

None of these
Depth of tank
Surface area of tank
Both depth and surface area of tank

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Environmental Engineering
Ground water is usually free from

Suspended impurities
None of these
Both suspended and dissolved impurities
Dissolved impurities

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Environmental Engineering
The devices which are installed for drawing water from the sources are called

Filters
Aquiclude
Intakes
Aquifers

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

Sulphur dioxide
Carbon dioxide
Bleaching powder
Chloramines

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Environmental Engineering
The depression of water table in a well due to pumping will be maximum(Where ‘R’ is the radius of influence)

At a distance R from the well
Close to the well
At a distance R/2 from the well
None of these

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