Environmental Engineering in CE Threshold limit value (TLV) i.e., the maximum permissible safe limit of phosgene gas which Hitler used to use to kill his enemies in 'gas chamber' is about __________ ppm. 10-100 100-200 100-1000 10-100 100-200 100-1000 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE 'Safe limit' called Threshold Limit Value (TLV) of carbon monoxide in atmospheric air is < 50 ppm. The main source of carbon monoxide pollutant in air is the Industrial chimney exhaust Photochemical reaction in polluted atmosphere Burning of domestic fuel Automobiles exhaust Industrial chimney exhaust Photochemical reaction in polluted atmosphere Burning of domestic fuel Automobiles exhaust ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Inhalation of lead compounds present in automobile exhaust (using leaded petrol) causes Nervous system disorder Blood poisoning All of these Anaemia Nervous system disorder Blood poisoning All of these Anaemia ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Which is a secondary air pollutant? Sulphur dioxide Nitrogen dioxide Photochemical smog Dust particles Sulphur dioxide Nitrogen dioxide Photochemical smog Dust particles ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Iron & manganese present in the polluted water is removed by Chemical coagulation Simple filtration Oxidation followed by settling & filtration Chlorination only Chemical coagulation Simple filtration Oxidation followed by settling & filtration Chlorination only ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Which of the following gases is having the widest explosion limit (about 2 to 81% gas in gas-air mixture), rendering it the property of the most explosive gas? Carbon monoxide Acetylene Ammonia Hydrogen Carbon monoxide Acetylene Ammonia Hydrogen ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS