Environmental Engineering in CE The destruction of water-borne pathogens is termed as disinfection of water. Which of the following is a water disinfectant? Chlorine Benzene hexachloride Alkyl benzene sulphonate (ABS) Alkalis Chlorine Benzene hexachloride Alkyl benzene sulphonate (ABS) Alkalis ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Green house gases blanket/block the infrared radiation from earth's surface to the atmosphere leading to its progressive warming up. Which of the following gases does not exhibit green house effect? N₂ H₂ SO₃ CO₂ N₂ H₂ SO₃ CO₂ ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE As compared to rapid sand filters, slow sand filters give(i) Slower filtration rate(ii) Higher filtration rate(iii) Lesser efficiency in removal of bacteria(iv) Higher efficiency in removal of bacteriaThe correct answer is (ii) and (iv) (i) and (iv) (ii) and (iii) (i) and (ii) (ii) and (iv) (i) and (iv) (ii) and (iii) (i) and (ii) ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE The ratio of oxygen available to the oxygen required for stabilisation of sewage is called the Oxygen ion concentration Bacterial stability factor Relative stability Biological oxygen demand (BOD) Oxygen ion concentration Bacterial stability factor Relative stability Biological oxygen demand (BOD) ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE The function of skimming tank in sewage treatment is to remove __________ substances. Gritty & inorganic Oil & fatty Suspended solid Dissolved solid Gritty & inorganic Oil & fatty Suspended solid Dissolved solid ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE The main industrial source of emission of hydrogen sulphide air pollutant is Coal based thermal power plants Petroleum refineries Pulp and paper plant Metallurgical roasting & smelting plant Coal based thermal power plants Petroleum refineries Pulp and paper plant Metallurgical roasting & smelting plant ANSWER DOWNLOAD EXAMIANS APP
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