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Environmental Engineering

Environmental Engineering
As compared to cast iron pipes, steel pipes are

Stronger
Heavier
Costlier
Less susceptible to corrosion

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Environmental Engineering
In facultative stabilization pond, the sewage is treated by

Dual action of aerobic bacteria and anaerobic bacteria
Sedimentation
Algae only
Aerobic bacteria only

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Environmental Engineering
The amount of residual chlorine left in public water supply for safety against pathogenic bacteria is about

1.0 to 5.0 ppm
0.5 to 1.0 ppm
0.05 to 0.5 ppm
0.01 to 0.05 ppm

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

Catch basin
Inlet
Drop manhole
Manhole

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Environmental Engineering
Dissolved oxygen in streams is

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

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Environmental Engineering
Sewage treatment units are designed for

Average flow only
Maximum and minimum flow
Maximum flow only
Minimum flow only

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MORE MCQ ON Environmental Engineering

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