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Environmental Engineering in CE

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

Mercury
Arsenic
Fluoride
Lead

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Environmental Engineering in CE
Moist atmospheric air at high temperature (e.g., in summer) having high concentration of sulphur dioxide causes

Fading of dyes on textiles
Reduced strength of textiles
Corrosion, tarnishing & soiling of metals
All of these

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Environmental Engineering in CE
Carcinogenic air pollutants cause

Bone decay
Asphyxiation (suffocation)
Cancer
Anemia

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Environmental Engineering in CE
The per capital consumption of a locality is affected by(i) Climatic conditions(ii) Quality of water(iii) Distribution pressure

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

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Environmental Engineering in CE
Water filtration rate in a slow sand filter ranges from __________ litres/m²/hr.

4000 to 5000
100 to 200
10 to 20
1500 to 2500

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Environmental Engineering in CE
Threshold limit value (TLV) means maximum permissible/acceptable concentration. TLV of phosgene in air is about __________ ppm (parts per million).

0.002
1.2
0.2
4.8

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