Environmental Engineering in CE Which of the following sources is responsible for maximum air pollution? Photochemical oxidation of organic matter Automobiles exhaust Industrial chimney exhaust Forest fire Photochemical oxidation of organic matter Automobiles exhaust Industrial chimney exhaust Forest fire ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Noise produced by cooling fans (employed in air cooled heat exchangers or cooling tower) is mainly caused due to the turbulence created by blade passage through air. It can be reduced by use of a slower fan Of increased diameter Both A & B With greater number of blades Neither A nor B Of increased diameter Both A & B With greater number of blades Neither A nor B ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Radioactive substances present in the polluted water stream can be removed by Biological oxygen treatment None of these Adsorption in ion exchange materials Coagulation and filtration Biological oxygen treatment None of these Adsorption in ion exchange materials Coagulation and filtration ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Noise level audible to audience sitting in the 5th row from the stage during a large orchestra show corresponds to about __________ decibels. 160 135 185 105 160 135 185 105 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Polyvinyl chloride containers are not suitable for storing None of these Woolen clothes Foodstuffs Metallic powder None of these Woolen clothes Foodstuffs Metallic powder ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Which of the following radioactive wastes emits all α, β & γ rays and hence is the most hazardous of all radioactive emitters? I-131 Ra-226 Sr-90 Au-198 I-131 Ra-226 Sr-90 Au-198 ANSWER DOWNLOAD EXAMIANS APP
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