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Environmental Engineering in CE

Environmental Engineering in CE
Carbonaceous particles having size less than 1 μm are called

Grit
Aggregates
Smoke
Aerosols

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Environmental Engineering in CE
If carbon monoxide content in atmospheric air exceeds __________ ppm, death is bound to occur.

50
1000
3000 (i.e. 0.3%)
500

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Environmental Engineering in CE
Septic tanks are used for the __________ of the deposited solids.

Anaerobic decomposition
Aerobic decomposition
None of these
Separation

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Environmental Engineering in CE
Which of the following is not a secondary air pollutant?

Photochemical smog
All of these
Ozone
Sulphur dioxide

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Environmental Engineering in CE
Which of the following is an adsorbant for removal of nitrogen oxides from gas/air?

Active carbon
Pulverised limestone
Bog iron (iron oxide)
Silica gel

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Environmental Engineering in CE
Iron & manganese present as pollutant in water can not be removed by

Lime soda process or manganese zeolite process
Ion exchange process
Chlorination
Oxidation followed by settling & filtration

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MORE MCQ ON Environmental Engineering in CE

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