Environmental Engineering in CE Which of the following is an adsorbant used for the removal of SO₂ from gas/air? Limestone powder or alkalised alumina Silica gel Bog iron Active carbon Limestone powder or alkalised alumina Silica gel Bog iron Active carbon 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 None of these Mufflers (silencers) Accoustical absorbent Lagging of noisy duct None of these Mufflers (silencers) ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE There are thirteen metals which are treated as pollutants. Which of the following metals is not a pollutant? Arsenic Mercury Aluminium Lead Arsenic Mercury Aluminium Lead ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE The type of bacteria which is active in trickling filter during biological treatment of sewage is the __________ bacteria. Anaerobic Aerobic Parasitic Saphrophytic Anaerobic Aerobic Parasitic Saphrophytic ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Polluted water having low BOD are most economically treated in Sludge digester Oxidation ponds Sedimentation tanks Clarifier Sludge digester Oxidation ponds Sedimentation tanks Clarifier ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Which of the following dust collection equipments is the least efficient (for sub-micronic particles)? Hollow wet scrubber Cyclone separator Dust catcher (gravity type) Bag filter Hollow wet scrubber Cyclone separator Dust catcher (gravity type) Bag filter ANSWER DOWNLOAD EXAMIANS APP