Environmental Engineering in CE Maximum permissible limit of industrial noise as recommended by World Health Organisation (WHO) is __________ decibels. 95 105 75 35 95 105 75 35 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Cleaning is done by(i) Scraping and removal in filters slow sand(ii) Back washing in slow sand filters(iii) Scraping and removal in filters rapid sand(iv) Back washing in rapid sand filtersThe correct answer is (ii) and (iv) (i) and (iv) (ii) and (iii) (i) and (ii) (ii) and (iv) (i) and (iv) (ii) and (iii) (i) and (ii) ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Which is the most efficient dust removal equipment for removal of sub-micronic dust particles from blast furnace gas? Hydrocyclone Packed scrubber Electrostatic precipitator Gravity settling chamber Hydrocyclone Packed scrubber Electrostatic precipitator Gravity settling chamber ANSWER DOWNLOAD EXAMIANS APP
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 Which is the most practical and economical method for removal of suspended solid matter from polluted water? Skimming off Biological oxidation Sedimentation Chlorination Skimming off Biological oxidation Sedimentation Chlorination 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? Lead Arsenic Aluminium Mercury Lead Arsenic Aluminium Mercury ANSWER DOWNLOAD EXAMIANS APP
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