Environmental Engineering in CE Beyond what concentration of H₂S in air, acute danger to human life exists? 700 ppm 100 ppm 50 ppm 300 ppm 700 ppm 100 ppm 50 ppm 300 ppm ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Arsenic pollutant is not generated in____industries. Beverages Glass & ceramic Any of these Tanneries Beverages Glass & ceramic Any of these Tanneries ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Sooty and sulphurous smog formed due to combustion of fossil fuels particularly in winter, continues throughout the day and night. When the moist atmospheric air's water vapor condenses on the solid particles of smoke thereby forming smog (smoke + fog), it causes Respiratory trouble Irritation in eyes All of these Poor visibility due to sky darkening Respiratory trouble Irritation in eyes All of these Poor visibility due to sky darkening 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 42 2 332 1050 42 2 332 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE The disinfection efficiency of chlorine increases by(i) Decreasing the time of contact(ii) Decreasing the temperature of water(iii) Increasing the temperature of water Only (i) Both (i) and (ii) Both (i) and (iii) Only (iii) Only (i) Both (i) and (ii) Both (i) and (iii) Only (iii) ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Water filtration rate in a slow sand filter ranges from __________ litres/m²/hr. 4000 to 5000 10 to 20 1500 to 2500 100 to 200 4000 to 5000 10 to 20 1500 to 2500 100 to 200 ANSWER DOWNLOAD EXAMIANS APP
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