Environmental Engineering in CE Threshold limit value (TLV) means maximum permissible/acceptable concentration. TLV of phosgene in air is about __________ ppm (parts per million). 1.2 0.002 0.2 4.8 1.2 0.002 0.2 4.8 ANSWER DOWNLOAD EXAMIANS APP
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. 100-200 10-100 100-1000 100-200 10-100 100-1000 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE The biological decomposition of organic substances in wastes controlled conditions is called Biological oxidation Composting Incineration None of these Biological oxidation Composting Incineration None of these ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE The pH value of oxidised sewage is about 13.4 1.8 7.3 6.2 13.4 1.8 7.3 6.2 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Which is the most efficient dust removal equipment for removal of sub-micronic dust particles from blast furnace gas? Electrostatic precipitator Packed scrubber Hydrocyclone Gravity settling chamber Electrostatic precipitator Packed scrubber Hydrocyclone Gravity settling chamber ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Automobile exhaust is passed through two compartments catalytic converter employing platinum as catalyst for All of these Conversion of CO into CO₂ in the second compartment Oxidation of unburnt hydrocarbon fuel in the second compartment Conversion of NOx into N₂ and NH₃ in the first compartment All of these Conversion of CO into CO₂ in the second compartment Oxidation of unburnt hydrocarbon fuel in the second compartment Conversion of NOx into N₂ and NH₃ in the first compartment ANSWER DOWNLOAD EXAMIANS APP
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