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 The resistance of water to the passage of light through it is a measure of the Dissolved gases Turbidity Color Hardness Dissolved gases Turbidity Color Hardness ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Threshold limit value (TLV) of CO in air is __________ ppm. 50 5 2000 5000 50 5 2000 5000 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Scale formation in boiler is controlled by Reduction in hardness, silica & alumina in feed water Eliminating H₂S in feed water Keeping the pH value of feed water just below 7 Preheating of feed water Reduction in hardness, silica & alumina in feed water Eliminating H₂S in feed water Keeping the pH value of feed water just below 7 Preheating of feed water ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Smoke is produced due to Poor design & overloading of furnace Poor quality of fuel and improper mixing of fuel & combustion air Insufficient supply of combustion air and insufficient time for combustion All of these Poor design & overloading of furnace Poor quality of fuel and improper mixing of fuel & combustion air Insufficient supply of combustion air and insufficient time for combustion All of these ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Radioactive substances present in the polluted water stream can be removed by Coagulation and filtration Adsorption in ion exchange materials Biological oxygen treatment None of these Coagulation and filtration Adsorption in ion exchange materials Biological oxygen treatment None of these ANSWER DOWNLOAD EXAMIANS APP
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