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Environmental Engineering

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

Stronger
Costlier
Less susceptible to corrosion
Heavier

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Environmental Engineering
Period of cleaning of slow sand filters is about

10 - 12 days
24 - 48 hours
1 - 2 year
2 - 3 months

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

Inlet
Drop manhole
Manhole
Catch basin

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Environmental Engineering
The length of rectangular sedimentation tank should not be more than (Where ‘B’ is the width of the tank)

8B
2B
B
4B

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Environmental Engineering
Standard EDTA (ethylene diamine tetra acetic acid) solution is used to determine the

Hardness in water
Dissolved oxygen in water
Residual chlorine in water
Turbidity in water

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Environmental Engineering
A sewer that receives the discharge of a number of house sewers is called

Sub-main sewer
Intercepting sewer
House sewer
Lateral sewer

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