Environmental Engineering in CE Fluorosis (a bone disease) is caused by the presence of high concentration of __________ in atmospheric air. Nitrogen dioxide Hydrogen flouride Hydrocarbons Hydrogen sulphides Nitrogen dioxide Hydrogen flouride Hydrocarbons Hydrogen sulphides ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE High noise levels produced during operation of fans and compressors can be reduced by using Accoustical absorbent Lagging of noisy duct Mufflers (silencers) None of these Accoustical absorbent Lagging of noisy duct Mufflers (silencers) None of these ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Lung cancer & DNA breakage are the major ill effects of excessive ozone exposure to human beings. Ozone layer depletion in the atmosphere is mainly caused by the presence of CFC (chloro fluoro carbon) Hydrocarbons CO₂ SO₂ CFC (chloro fluoro carbon) Hydrocarbons CO₂ SO₂ ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Iron & manganese present in the polluted water is removed by Chlorination only Oxidation followed by settling & filtration Simple filtration Chemical coagulation Chlorination only Oxidation followed by settling & filtration Simple filtration Chemical coagulation ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Smoke is produced due to Insufficient supply of combustion air and insufficient time for combustion Poor design & overloading of furnace All of these Poor quality of fuel and improper mixing of fuel & combustion air Insufficient supply of combustion air and insufficient time for combustion Poor design & overloading of furnace All of these Poor quality of fuel and improper mixing of fuel & combustion air ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Presence of excess flourine in water causes Respiratory disease Fluorosis Dental cavity Tooth decay Respiratory disease Fluorosis Dental cavity Tooth decay ANSWER DOWNLOAD EXAMIANS APP
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