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Environmental Engineering

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

Aquiclude
Intakes
Filters
Aquifers

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

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

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Environmental Engineering
The per capital consumption of a locality is affected by (i) Climatic conditions (ii) Quality of water (iii) Distribution pressure

Only (i)
Both (i) and (ii)
Both (i) and (iii)
All (i), (ii) and (iii)

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Environmental Engineering
The method of analysis of distribution system in which the domestic supply is neglected and fire demand is considered is

Circle method
Hardy cross method
Equivalent pipe method
Electrical analysis method

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Environmental Engineering
For satisfactory working of a sludge digestion unit, the pH range of digested sludge should be maintained as

4.5 to 6.0
8.5 to 10.0
6.5 to 8.0
10.5 to 12.0

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Environmental Engineering
The ratio of 5 day BOD to ultimate BOD is about

43833
43864
1
43894

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