Environmental Engineering in CE Shouting by a man at his full voice corresponds to a voice level of about __________ decibels. 50 80 120 25 50 80 120 25 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE TLV of ammonia, nitrogen dioxide and phenol vapor in air is __________ ppm. 100 1000 5 2000 100 1000 5 2000 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE In sewage treatment, the detention period allowed for oxidation ponds ranges from __________ weeks. 15 to 20 9 to 10 1 to 2 4 to 5 15 to 20 9 to 10 1 to 2 4 to 5 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Hydrogen ion concentration in distilled water is 7 x 10⁻⁷ 10⁷ 10⁻⁷ 7 x 10⁷ 7 x 10⁻⁷ 10⁷ 10⁻⁷ 7 x 10⁷ ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE The common pollutant generated in chlor-alkali industry and battery manufacture is Brine Phosphate None of these Mercury Brine Phosphate None of these Mercury ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Coal mines drainage waste water (acidic in nature) results from the earth's water percolating through the voids created in coal bed during mining. This polluted water which either drains out naturally to water courses or are removed before starting the mining is Diluted with fresh water to reduce its acidity Neutralised by alkali treatment Left as such without any treatment None of these Diluted with fresh water to reduce its acidity Neutralised by alkali treatment Left as such without any treatment None of these ANSWER DOWNLOAD EXAMIANS APP
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