Environmental Engineering in CE The principal gas evolved from sludge digestion tank is N₂ CH₄ CO CO₂ N₂ CH₄ CO CO₂ ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Irradiation of water by ultraviolet light of suitable wavelength is commonly used for disinfection of water in Food industry Petroleum refinery Iron & steel plant Municipal sewage treatment Food industry Petroleum refinery Iron & steel plant Municipal sewage treatment ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE In water treatment plant, zeolite process is used to remove the __________ of water. Iron & zinc Hardness Alkalinity Acidity Iron & zinc Hardness Alkalinity Acidity ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE The pH value of oxidised sewage is about 13.4 7.3 1.8 6.2 13.4 7.3 1.8 6.2 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Which of the following is a green house gas other than CO₂ ? All of these Methane Nitrous oxide Chlorofluro carbons (CFC) All of these Methane Nitrous oxide Chlorofluro carbons (CFC) ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Lagoons used for purification of polluted water Gives an excellent final effluent (with 3 to 4 lagoons arranged in series) having suspended solid < 1 mg/litre and BOD = 3.8 mg/litre Are large shallow artificial lakes also known as clarification lakes, maturation ponds or oxidation ponds All of these Use micro-organisms/bacteria in presence of dissolved oxygen Gives an excellent final effluent (with 3 to 4 lagoons arranged in series) having suspended solid < 1 mg/litre and BOD = 3.8 mg/litre Are large shallow artificial lakes also known as clarification lakes, maturation ponds or oxidation ponds All of these Use micro-organisms/bacteria in presence of dissolved oxygen ANSWER DOWNLOAD EXAMIANS APP
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