Environmental Engineering in CE The average thickness of ozone layer in stratosphere is about __________ dobson unit (DU). 750 230 20 1500 750 230 20 1500 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE The amount of chemical coagulant added for treatment of polluted water __________ with increase in temperature of the polluted water to be treated. Remains constant Decreases Increases May increase or decrease ; depends on the chemical characteristics of polluted water Remains constant Decreases Increases May increase or decrease ; depends on the chemical characteristics of polluted water ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Inhalation of lead compounds present in automobile exhaust (using leaded petrol) causes Nervous system disorder Anaemia All of these Blood poisoning Nervous system disorder Anaemia All of these Blood poisoning ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Siderosis is a disease caused by the inhalation of __________ dust. Iron Coal Silica None of these Iron Coal Silica None of these ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Lagooning process is mainly a means of the Sludge disposal None of these Reduction of excessive flow in sewers Biological treatment of wastes Sludge disposal None of these Reduction of excessive flow in sewers Biological treatment of wastes ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE TLV of ammonia, nitrogen dioxide and phenol vapor in air is __________ ppm. 2000 100 1000 5 2000 100 1000 5 ANSWER DOWNLOAD EXAMIANS APP
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