Environmental Engineering in CE Beyond what concentration of H₂S in air, acute danger to human life exists? 100 ppm 700 ppm 50 ppm 300 ppm 100 ppm 700 ppm 50 ppm 300 ppm ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE The main type of sludge gas evolved during sewage treatment in Imhoff tank is CO₂ CO H₂ CH₄ CO₂ CO H₂ CH₄ ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Most of the bacteria in sewage are None of these Anerobic Saprophytic Parasitic None of these Anerobic Saprophytic Parasitic ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE The main industrial source of emission of hydrogen sulphide air pollutant is Metallurgical roasting & smelting plant Coal based thermal power plants Pulp and paper plant Petroleum refineries Metallurgical roasting & smelting plant Coal based thermal power plants Pulp and paper plant Petroleum refineries ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE TLV of mercury in potable (drinking) water is about __________ ppm. 1 5 0.001 0.1 1 5 0.001 0.1 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Maximum permissible concentration (i.e. TLV) of DDT in public water supply system is __________ micro gram (μ g)/litre. 1050 332 42 2 1050 332 42 2 ANSWER DOWNLOAD EXAMIANS APP
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