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Environmental Engineering in CE

Environmental Engineering in CE
TLV of NO₂ & NO exposure for the human being is 5 & 25 ppm respectively. Prolonged exposure of human being to NO₂ causes

Cancer
Bone disease
Skin disorder
Bronchitis

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Environmental Engineering in CE
Noise level audible to audience sitting in the 5th row from the stage during a large orchestra show corresponds to about __________ decibels.

135
105
160
185

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Environmental Engineering in CE
Oilish impurities present the effluent discharged from the electroplating industry is normally not removed by

Chemical coagulation
Floatation & skimming
Ultrafiltration
Centrifugation

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Environmental Engineering in CE
Which of the following is the common pollutant emitted from metallurgical smelters, thermal power plant and cement plants?

Hg
NOx
F
SO₂

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Environmental Engineering in CE
The progressive warming up of the earth's surface is mainly due to the

Thickening of ozone layer
Blanketing effect of CO₂ in the atmosphere
Automobile exhaust
De-forestation

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Environmental Engineering in CE
Radioactive solid nuclear wastes are disposed off by

Pathological incineration
Pyrolysis
High temperature incineration
Underground burial in concrete containers

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