Environmental Engineering in CE TLV of ozone (O₃) and phosgene (COCl₂) in air is __________ ppm. 25 1000 100 0.1 25 1000 100 0.1 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE The permissible color for domestic water supply is __________ ppm. 1000 100 1 20 1000 100 1 20 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE TLV of aldrin in public water supply system is about __________ μg/litre. 1097 17 357 0.5 1097 17 357 0.5 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Disinfection of water is done to destroy pathogenic bacteria and thus prevent water-borne diseases. Disinfection of water may be done by the use of Chlorine or its compounds Ozone and iodine Ultraviolet light for irradiation of water All of these Chlorine or its compounds Ozone and iodine Ultraviolet light for irradiation of water All of these ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Noise level heard at a distance of about 100 metres from a jet engine with after burner is about __________ decibels. 200 120 140 170 200 120 140 170 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Ozone is A secondary pollutant A primary pollutant Impervious to ultra-violet rays Both B & C A secondary pollutant A primary pollutant Impervious to ultra-violet rays Both B & C ANSWER DOWNLOAD EXAMIANS APP