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Environmental Engineering in CE

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

Blood poisoning
Nervous system disorder
Anaemia
All of these

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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

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

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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.

185
105
135
160

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Environmental Engineering in CE
Disinfection of water is done to destroy pathogenic bacteria and thus prevent water-borne diseases. Disinfection of water may be done by the use of

Chlorine or its compounds
All of these
Ultraviolet light for irradiation of water
Ozone and iodine

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Environmental Engineering in CE
Foul odour and bad taste of water is removed by treating with

Bleaching powder
Activated carbon
Copper sulphate
Alum

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Environmental Engineering in CE
'Safe limit' called Threshold Limit Value (TLV) of carbon monoxide in atmospheric air is < 50 ppm. The main source of carbon monoxide pollutant in air is the

Burning of domestic fuel
Photochemical reaction in polluted atmosphere
Industrial chimney exhaust
Automobiles exhaust

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