Environmental Engineering in CE Maximum permissible limit of mercury in human blood is __________ micrograms/100 c.c. 7 82 19 1 7 82 19 1 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Particulates (< 1μm size) remaining suspended in air indefinitely and transported by wind currents are called Fumes Aerosols Mists Smoke Fumes Aerosols Mists Smoke ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Photochemical smog is formed from automobile exhaust Appears only on sunny days By reaction of hydrocarbon & nitric oxide in presence of sunlight All of these Is harmful for crops and trees also besides causing eye irritation & asthma Appears only on sunny days By reaction of hydrocarbon & nitric oxide in presence of sunlight All of these Is harmful for crops and trees also besides causing eye irritation & asthma ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE If carbon monoxide content in atmospheric air exceeds __________ ppm, death is bound to occur. 50 3000 (i.e. 0.3%) 500 1000 50 3000 (i.e. 0.3%) 500 1000 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Shouting by a man at his full voice corresponds to a voice level of about __________ decibels. 120 50 80 25 120 50 80 25 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE The main pollutant in waste water discharged from a petroleum refinery is oil (both in free and emulsified form). Free oil is removed by Aerated lagoons Biological oxygen pond Gravity separator having oil skimming devices Trickling filters Aerated lagoons Biological oxygen pond Gravity separator having oil skimming devices Trickling filters ANSWER DOWNLOAD EXAMIANS APP
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