Environmental Engineering in CE Disinfection of water is done to destroy pathogenic bacteria and thus prevent water-borne diseases. Disinfection of water may be done by the use of All of these Chlorine or its compounds Ozone and iodine Ultraviolet light for irradiation of water All of these Chlorine or its compounds Ozone and iodine Ultraviolet light for irradiation of water ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Which of the following plants does not emit appreciable amount of SO₂ in atmosphere? Thermal power plant Petroleum refinery Sulphuric acid plant Nitric acid plant Thermal power plant Petroleum refinery Sulphuric acid plant Nitric acid plant ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Which of the following is a secondary air pollutant? Nitrogen dioxide Photochemical smog Dust particles Sulphur dioxide Nitrogen dioxide Photochemical smog Dust particles Sulphur dioxide 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 None of these Troposphere Ionosphere Stratosphere None of these Troposphere Ionosphere Stratosphere ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Presence of excess flourine in water causes Dental cavity Fluorosis Respiratory disease Tooth decay Dental cavity Fluorosis Respiratory disease Tooth decay ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Smoke is produced due to All of these Insufficient supply of combustion air and insufficient time for combustion Poor design & overloading of furnace Poor quality of fuel and improper mixing of fuel & combustion air All of these Insufficient supply of combustion air and insufficient time for combustion Poor design & overloading of furnace Poor quality of fuel and improper mixing of fuel & combustion air ANSWER DOWNLOAD EXAMIANS APP
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