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Environmental Engineering in CE

Environmental Engineering in CE
Presence of nitrates in water in excess of 50 ppm causes

Asphyxiation
Tooth decay
Mathenoglobenemia
Gastroentetitis

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Environmental Engineering in CE
Peroxyacyl nitrate (PAN), a pollutant is found in the

Exhaust of nitric acid plant
Exhaust of sulphuric acid plant
Flue gas of coal based power plant
Automobile exhaust

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Environmental Engineering in CE
Maximum permissible limit of mercury in human blood is __________ micrograms/100 c.c.

1
7
82
19

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Environmental Engineering in CE
The most commonly used chemical coagulant in water treatment is

Alum
Lime
Ferrous sulphate
Hydrazine

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Environmental Engineering in CE
Fresh domestic sewage is __________ in color.

Black
Red
Grey
Dark brown

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

CO
H₂S
SO₂
Hydrocarbons

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