Environmental Engineering in CE Tolerable limit of nitrogen oxides in air is __________ ppm. 5 0.1 25 1 5 0.1 25 1 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Acute danger to human life (i.e. death) exists, if the concentration of CO₂ in atmospheric air exceeds __________ percent (by volume). 7 3 20 1 7 3 20 1 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Presence of a certain minimum quantity of flourine is desirable in potable water to prevent Corrosion Water-borne disease Dental cavities Scale formation Corrosion Water-borne disease Dental cavities Scale formation ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Thermal pollution of water increases its toxicity and oxidation of oxygen demanding waste besides favouring bacterial growth. A rise in water temperature by 10°C, doubles the toxic effects of __________ present in it. Coal ash None of these Potassium cyanide Ortho-xylene Coal ash None of these Potassium cyanide Ortho-xylene ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Water filtration rate in a slow sand filter ranges from __________ litres/m²/hr. 1500 to 2500 10 to 20 100 to 200 4000 to 5000 1500 to 2500 10 to 20 100 to 200 4000 to 5000 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Maximum permissible limit of mercury in human blood is __________ micrograms/100 c.c. 7 19 82 1 7 19 82 1 ANSWER DOWNLOAD EXAMIANS APP
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