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Environmental Engineering in CE

Environmental Engineering in CE
Which of the following pollutants is not emitted during volcanic eruptions?

CO
SO₂
H₂S
Hydrocarbons

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Environmental Engineering in CE
Algae growth in water is controlled by

Bleaching
Deoxidation
Chlorination
Aeration

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Environmental Engineering in CE
Hardy cross method of analysis of distribution system(i) Involves successive trials(ii) Takes economic aspects into account(iii) Is time consuming

(i) and (ii)
Only (i)
(i) and (iii)
All are correct

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Environmental Engineering in CE
Green house effect is accentuated by

Deforestation
All of these
Rapid industrialisation
Increased transportation activity

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Environmental Engineering in CE
Iron & manganese present in the polluted water is removed by

Oxidation followed by settling & filtration
Simple filtration
Chemical coagulation
Chlorination only

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

115
10
90
45

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