Environmental Engineering in CE In sewage treatment, the detention period allowed for oxidation ponds ranges from __________ weeks. 15 to 20 9 to 10 4 to 5 1 to 2 15 to 20 9 to 10 4 to 5 1 to 2 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Death may occur, when SO₂ concentration in atmospheric air exceeds __________ ppm. 100 400 200 20 100 400 200 20 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Lagoons used for purification of polluted water Use micro-organisms/bacteria in presence of dissolved oxygen Are large shallow artificial lakes also known as clarification lakes, maturation ponds or oxidation ponds 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 All of these Use micro-organisms/bacteria in presence of dissolved oxygen Are large shallow artificial lakes also known as clarification lakes, maturation ponds or oxidation ponds 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 All of these ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Oceans act as sinks for atmospheric gases including carbon dioxide whose concentration in the atmosphere is increased by the Green house effect Vegetation Forestation Rain Green house effect Vegetation Forestation Rain ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE White smoke coming out of the chimney of a furnace indicates the use of Low excess air Very high excess air Gaseous fuel in the furnace Liquid fuel in the furnace Low excess air Very high excess air Gaseous fuel in the furnace Liquid fuel in the furnace ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE 'Pneumoconiosis' is a disease caused by the inhalation of __________ dust. Coal Lime Iron ore Uranium ore Coal Lime Iron ore Uranium ore ANSWER DOWNLOAD EXAMIANS APP
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