Environmental Engineering in CE The biological decomposition of organic substances in wastes controlled conditions is called Composting Incineration Biological oxidation None of these Composting Incineration Biological oxidation None of these ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Presence of __________ bacteria in water causes disease like typhoid. Non-pathogenic Anaerobic Pathogenic Aerobic Non-pathogenic Anaerobic Pathogenic Aerobic ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Color test of water is done with an instrument called Turbidimeter Tintometer Colorimeter Electro-chemical cell Turbidimeter Tintometer Colorimeter Electro-chemical cell 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? Sr-90 I-131 Ra-226 Au-198 Sr-90 I-131 Ra-226 Au-198 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Polluted water having low BOD are most economically treated in Sedimentation tanks Clarifier Sludge digester Oxidation ponds Sedimentation tanks Clarifier Sludge digester Oxidation ponds ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE CFC (chloro fluoro carbon) is very highly reactive in causing depletion of ozone layer in the atmosphere. Each atom of chlorine liberated from CFC is capable of decomposing __________ molecules of ozones. 10¹⁵ 10⁵ 10² 10⁹ 10¹⁵ 10⁵ 10² 10⁹ ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS