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Environmental Engineering in CE

Environmental Engineering in CE
Maximum permissible turbidity in potable water is __________ ppm.

10
250
1000
1

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Environmental Engineering in CE
The resistance of water to the passage of light through it is a measure of the

Turbidity
Dissolved gases
Color
Hardness

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Environmental Engineering in CE
Which of the following is a secondary air pollutant?

Sulphur dioxide
Dust particles
Photochemical smog
Nitrogen dioxide

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Environmental Engineering in CE
Which of the following is an adsorbant used for the removal of SO₂ from gas/air?

Active carbon
Silica gel
Bog iron
Limestone powder or alkalised alumina

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Environmental Engineering in CE
Fluorosis is caused due to the presence of excessive amount of __________ in drinking water.

Lead
Mercury
Fluoride
Arsenic

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Environmental Engineering in CE
Which of the following is a manmade source of air pollution?

Automobile exhaust
Forest fire
Bacterial action in soil and swamp areas
All of these

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