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Environmental Engineering

Environmental Engineering
Select the correct relationship between porosity (N), specific yield (y) and specific retention (R)

N = y + R
R > (N + y)
R = N + y
y = N + R

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Environmental Engineering
The maximum discharge of a tube well is about

1000 liters/sec
5 liters/sec
50 liters/sec
500 liters/sec

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Environmental Engineering
The pipe which is used to carry the discharge from sanitary fittings like bath rooms, kitchens etc. is called

Soil pipe
Anti-siphonage pipe
Waste pipe
Vent pipe

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Environmental Engineering
If the total hardness of water is greater than its total alkalinity, the carbonate hardness will be equal to

Total hardness total alkalinity
Non carbonate hardness
Total alkalinity
Total hardness

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Environmental Engineering
The most commonly used sewer under culverts is

Circular brick sewer
Circular cast iron sewer
Semi-elliptical sewer
Horseshoe type sewer

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Environmental Engineering
The slope of sewer shall be

Given in the direction of natural slope of ground
Steeper than 1 in 20
Given in the direction opposite to natural slope of ground
Zero

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