Environmental Engineering in CE Which of the following is a manmade source of air pollution? All of these Bacterial action in soil and swamp areas Automobile exhaust Forest fire All of these Bacterial action in soil and swamp areas Automobile exhaust Forest fire ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Nitrogen oxides (NOx) is not produced in the __________ industry. Detergent Nitric acid making Any of these Nitrogenous fertiliser Detergent Nitric acid making Any of these Nitrogenous fertiliser ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Fluorosis is caused due to the presence of excessive amount of __________ in drinking water. Lead Arsenic Fluoride Mercury Lead Arsenic Fluoride Mercury ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE The density of the gases (present in air) decreases with increasing altitude to such an extent, that about 70% of the mass of atmospheric air is found in the lower 5 km. of the atmosphere. This lower region of atmosphere is called the Ionosphere Stratosphere Troposphere None of these Ionosphere Stratosphere Troposphere None of these ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Bacterial aerobic oxidation of polluted water in biological oxidation ponds is done to purify it. Presence of bacteria helps in Oxidation of carbonaceous matter to CO₂ Coagulation and flocculation of colloids Nitrification or oxidation of ammonia derived from breakdown of nitrogeneous organic matter to the nitrite and eventually to the nitrate All of these Oxidation of carbonaceous matter to CO₂ Coagulation and flocculation of colloids Nitrification or oxidation of ammonia derived from breakdown of nitrogeneous organic matter to the nitrite and eventually to the nitrate All of these ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Which of the following is not a natural source of air pollution? Volcanic eruptions and lightening discharges Photochemical oxidation of organic matter Biological decay of vegetable matter None of these Volcanic eruptions and lightening discharges Photochemical oxidation of organic matter Biological decay of vegetable matter None of these ANSWER DOWNLOAD EXAMIANS APP
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