Environmental Engineering in CE Ambient noise level can be reduced by __________ decibels by planting trees (like coconut, neem etc.) near public utility buildings (like hospitals & schools). 43832 43961 25-30 15-20 43832 43961 25-30 15-20 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Dust collection efficiency of a cyclone separator depends upon its Inlet gas velocity Diameter All of these Overall height Inlet gas velocity Diameter All of these Overall height ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Which of the following is the most widely used disinfectant in water treatment? Coagulation Cation exchanger Chlorine Irradiation of water by ultraviolet light Coagulation Cation exchanger Chlorine Irradiation of water by ultraviolet light ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE The ratio of oxygen available to the oxygen required for stabilisation of sewage is called the Bacterial stability factor Biological oxygen demand (BOD) Relative stability Oxygen ion concentration Bacterial stability factor Biological oxygen demand (BOD) Relative stability Oxygen ion concentration ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Inhalation of lead compounds present in the automobile exhausts (using leaded petrol) causes Nervous system disorder Anaemia All of these Blood poisoning Nervous system disorder Anaemia All of these Blood poisoning ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE In water chemical treatment plant, use of chloramines ensures Removal of permanent hardness Disinfection Weed control in reservoirs Taste & odour control Removal of permanent hardness Disinfection Weed control in reservoirs Taste & odour control ANSWER DOWNLOAD EXAMIANS APP
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