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 The main industrial source of emission of hydrogen sulphide air pollutant is Coal based thermal power plants Metallurgical roasting & smelting plant Petroleum refineries Pulp and paper plant Coal based thermal power plants Metallurgical roasting & smelting plant Petroleum refineries Pulp and paper plant ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Which of the following is a green house gas other than CO₂ ? All of these Methane Nitrous oxide Chlorofluro carbons (CFC) All of these Methane Nitrous oxide Chlorofluro carbons (CFC) ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE A standard test for determination of hardness in water is termed as __________ test. Presumptive EDTA Electometric Total count Presumptive EDTA Electometric Total count ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE What are the methods of treatment & disposal of radioactive wastes? All of these Biological methods & adsorption in ion exchange materials Evaporation & chemical precipitation Fixing into a solid mass with cement and sinking deep in the sea All of these Biological methods & adsorption in ion exchange materials Evaporation & chemical precipitation Fixing into a solid mass with cement and sinking deep in the sea ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Oil and grease present in an emulsified state in waste water discharged from industries can be removed by Chlorination Skimming off Biological oxidation Settling out using chemical reagents Chlorination Skimming off Biological oxidation Settling out using chemical reagents ANSWER DOWNLOAD EXAMIANS APP
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