Environmental Engineering in CE Inhalation of silica dust causes a disease called Silicosis Bronchitis Pneumoconiosis None of these Silicosis Bronchitis Pneumoconiosis None of these ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE A considerable part of the harmful ultraviolet radiation of the sum does not reach the earth surface, because of the fact that, there is a layer of __________ high above earth's atmosphere, which absorbs it. Hydrogen Carbon dioxide Ozone None of these Hydrogen Carbon dioxide Ozone None of these ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Out of the following, TLV of __________ is maximum (about 500 ppm). Carbon disulphide Acetaldehyde Carbon dioxide Toluene Carbon disulphide Acetaldehyde Carbon dioxide Toluene ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Threshold limit value (TLV) means maximum permissible/acceptable concentration. TLV of phosgene in air is about __________ ppm (parts per million). 0.002 1.2 0.2 4.8 0.002 1.2 0.2 4.8 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE CFC (chloro fluoro carbon) is very highly reactive in causing depletion of ozone layer in the atmosphere. Each atom of chlorine liberated from CFC is capable of decomposing __________ molecules of ozones. 10² 10¹⁵ 10⁵ 10⁹ 10² 10¹⁵ 10⁵ 10⁹ ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Which is the best and the most effective method for the removal of organic contaminant present in the polluted water in very small quantity (say < 200 mg/litre)? Activated carbon adsorption Chemical coagulation Biological oxidation pond Lagooning Activated carbon adsorption Chemical coagulation Biological oxidation pond Lagooning ANSWER DOWNLOAD EXAMIANS APP
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