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Environmental Engineering

Environmental Engineering
On standard silica scale, the turbidity in drinking water should be limited to

30 ppm
20 ppm
50 ppm
10 ppm

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

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

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Environmental Engineering
Which of the following methods of analysis of water distribution system is most suitable for long and narrow pipe system?

Circle method
Electrical analysis method
Equivalent pipe method
Hardy cross method

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

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

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Environmental Engineering
Which of the following values of pH represents a stronger acid?

3
2
4
5

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Environmental Engineering
If the coli form bacteria is present in a sample of water, then the coli-form test to be conducted is (i) Presumptive coli-form test (ii) Confirmed coli-form test (iii) Completed coli-form test

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

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