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Environmental Engineering in CE

Environmental Engineering in CE
Noise level in a quiet private business office is about __________ decibels.

25
85
50
70

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Environmental Engineering in CE
The common pollutant generated in chlor-alkali industry and battery manufacture is

Phosphate
Brine
None of these
Mercury

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Environmental Engineering in CE
Noise level during normal conversation among men is about __________ decibles.

115
45
10
90

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Environmental Engineering in CE
The detrimental effect on organism and water quality with temperature rise of aquatic system is the reduction of __________ of water.

Biological oxygen demand
Vapor pressure
All of these
Dissolved oxygen content

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Environmental Engineering in CE
Thermal pollution due to excessive heat & temperature in the working place causes

High breathing rate
Reduction in working efficiency of manpower
All of these
Fatigue

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Environmental Engineering in CE
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

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

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