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Environmental Engineering In CE
Quiz 11
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Q.1
Phenolic water generated in coke ovens & by-product plant of a steel plant are disposed off by
Quenching of hot coke
Discharging in the river stream
Filtration and recycling for cooling coke oven gas
None of these
Q.2
Pick out the wrong statement.
The concentric layer in atmosphere which contains about 70% of the total mass of atmosphere and characterised by a steady decrease in temperature is called stratosphere
Stratosphere is rich in ozone and is located just above the troposphere
Troposphere is a turbulent dusty zone containing much of water vapor and clouds
The earth's atmosphere is an envelope of gases extending upto a height of about 200 kms
Q.3
TLV of mercury in potable (drinking) water is about __________ ppm.
0.001
0.1
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Q.4
Which of the following acts as a natural source of air pollution?
Forest fire
Deforestation
Volcanic eruption
None of these
Q.5
The common pollutant generated in chlor-alkali industry and battery manufacture is
Mercury
Brine
Phosphate
None of these
Q.6
Oilish impurities present the effluent discharged from the electroplating industry is normally not removed by
Chemical coagulation
Floatation & skimming
Centrifugation
Ultrafiltration
Q.7
Presence of nitrates in water in excess of 50 ppm causes
Mathenoglobenemia
Gastroentetitis
Asphyxiation
Tooth decay
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