Environmental Engineering in CE Iron & manganese present in the polluted water is removed by Chlorination only Oxidation followed by settling & filtration Simple filtration Chemical coagulation Chlorination only Oxidation followed by settling & filtration Simple filtration Chemical coagulation 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 Left as such without any treatment Neutralised by alkali treatment None of these Diluted with fresh water to reduce its acidity Left as such without any treatment Neutralised by alkali treatment None of these Diluted with fresh water to reduce its acidity ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Which of the following industries discharge mercury as a pollutant? Chloro-alkali industry Tanneries Phosphoric acid plant Beverage plant Chloro-alkali industry Tanneries Phosphoric acid plant Beverage plant ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Direct reaction of unsaturated hydrocarbons with either NO or NO₂ produces an eye irritating pollutant compound known as Photochemical smog Benzopyrene Poly acrylonitrile Peroxy acetyl nitrate (PAN) or methyl nitrile Photochemical smog Benzopyrene Poly acrylonitrile Peroxy acetyl nitrate (PAN) or methyl nitrile ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Which of the following is the most detrimental for water used in high pressure boiler? Phenol Silica Dissolved oxygen Turbidity Phenol Silica Dissolved oxygen Turbidity ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE 5-200 μm size particles are called Dust Smoke Colloids or aerosols Powder Dust Smoke Colloids or aerosols Powder ANSWER DOWNLOAD EXAMIANS APP
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