Q.1
Phenolic water generated in coke ovens & by-product plant of a steel plant are disposed off by
Q.2
Pick out the wrong statement.
Q.3
TLV of mercury in potable (drinking) water is about __________ ppm.
Q.4
Which of the following acts as a natural source of air pollution?
Q.5
The common pollutant generated in chlor-alkali industry and battery manufacture is
Q.6
Oilish impurities present the effluent discharged from the electroplating industry is normally not removed by
Q.7
Presence of nitrates in water in excess of 50 ppm causes
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