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Environmental Engineering in CE

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

Tooth decay
Gastroentetitis
Asphyxiation
Mathenoglobenemia

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

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

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Environmental Engineering in CE
The common pollutant generated in chlor-alkali industry and battery manufacture is

Phosphate
Brine
None of these
Mercury

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Environmental Engineering in CE
The ratio of oxygen available to the oxygen required for stabilisation of sewage is called the

Bacterial stability factor
Oxygen ion concentration
Relative stability
Biological oxygen demand (BOD)

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Environmental Engineering in CE
Persons working in cement plants and limestone quarries are more prone to disease like

Silicosis
Cancer
Flourosis (bone disease)
Asthma

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Environmental Engineering in CE
A man exposed to excessive noise level in the working environment may suffer from

Rupture of ear drum
Hearing loss
All of these
Nervousness & fatigue

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