Environmental Engineering in CE Dissolved oxygen content in river water is around __________ ppm. 250 500 100 5 250 500 100 5 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Presence of nitrates in water in excess of 50 ppm causes Tooth decay Mathenoglobenemia Gastroentetitis Asphyxiation Tooth decay Mathenoglobenemia Gastroentetitis Asphyxiation ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Atmospheric pollution caused by the exhaust gas of supresonic transport air-crafts is mostly in the atmospheric region called Troposphere Mesosphere Stratosphere Thermosphere Troposphere Mesosphere Stratosphere Thermosphere ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Beyond what concentration of H₂S in air, acute danger to human life exists? 300 ppm 700 ppm 100 ppm 50 ppm 300 ppm 700 ppm 100 ppm 50 ppm ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Waste/polluted water discharged from electroplating, blast furnace and coal mining industries contain mainly __________ substances. Inorganic None of these Radioactive Organic Inorganic None of these Radioactive Organic 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 1 3 20 7 1 3 20 ANSWER DOWNLOAD EXAMIANS APP
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