Environmental Engineering in CE Presence of nitrates in water in excess of 50 ppm causes Asphyxiation Gastroentetitis Tooth decay Mathenoglobenemia Asphyxiation Gastroentetitis Tooth decay Mathenoglobenemia ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Which is a secondary air pollutant? Photochemical smog Nitrogen dioxide Sulphur dioxide Dust particles Photochemical smog Nitrogen dioxide Sulphur dioxide Dust particles ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Solid content in most of the domestic sewage is about __________ percent. 0.1 10 5 0.001 0.1 10 5 0.001 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 (i) and (iv) (i) and (ii) (ii) and (iv) (ii) and (iii) (i) and (iv) (i) and (ii) (ii) and (iv) (ii) and (iii) ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Dissolved oxygen content in river water is around __________ ppm. 100 250 500 5 100 250 500 5 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Maximum allowable concentration of CO₂ in air for safe working is __________ ppm (parts per million). 1000 2000 50 5000 1000 2000 50 5000 ANSWER DOWNLOAD EXAMIANS APP
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