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Environmental Engineering in CE

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

7
1
19
82

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Environmental Engineering in CE
Presence of carbon monoxide in atmosphere produced by decomposition of chlorophyl and haemoglobin breakdown of some animals, beyond TLV (>50 ppm)

Acts as a green house gas thereby raising earth's temperature
Causes asphyxia
Causes increase in sea level
Inhances the green house effect

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Environmental Engineering in CE
Thermal pollution of water increases its toxicity and oxidation of oxygen demanding waste besides favouring bacterial growth. A rise in water temperature by 10°C, doubles the toxic effects of __________ present in it.

Ortho-xylene
Potassium cyanide
None of these
Coal ash

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Environmental Engineering in CE
Arsenic pollutant is not generated in____industries.

Glass & ceramic
Tanneries
Any of these
Beverages

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Environmental Engineering in CE
Inhalation of lead compounds present in automobile exhaust (using leaded petrol) causes

Anaemia
Nervous system disorder
Blood poisoning
All of these

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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
Nervousness & fatigue
Hearing loss
All of these

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