Environmental Engineering in CE The destruction of water-borne pathogens is termed as disinfection of water. Which of the following is a water disinfectant? Alkalis Chlorine Benzene hexachloride Alkyl benzene sulphonate (ABS) Alkalis Chlorine Benzene hexachloride Alkyl benzene sulphonate (ABS) ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE The pH value of potable water should be between 4 to 5 13 to 14 6.5 to 8 1 to 1.5 4 to 5 13 to 14 6.5 to 8 1 to 1.5 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Presence of nitrogen in high concentration in contaminated air reduces partial pressure of oxygen in lungs, thereby causing asphyxia (suffocation) leading to death from oxygen deficiency. Concentration of Nā in contaminated air at which it acts as a natural asphyxant is ā„ __________ percent. 84 92 88 80 84 92 88 80 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Peroxyacyl nitrate (PAN), a pollutant is found in the Automobile exhaust Flue gas of coal based power plant Exhaust of sulphuric acid plant Exhaust of nitric acid plant Automobile exhaust Flue gas of coal based power plant Exhaust of sulphuric acid plant Exhaust of nitric acid plant ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE The major reason of hydrodynamic noise (i.e., noise resulting from liquid flow) is Pipe vibrations Fluctuation in liquid flow Boundary layer separation Cavitation Pipe vibrations Fluctuation in liquid flow Boundary layer separation Cavitation ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Phenolic water generated in coke ovens & by-product plant attached to an integrated steel plant containing phenol in concentration of less than 100 mg/litre can be removed by Treating in biological oxygen pond Chlorination Chemical coagulation None of these Treating in biological oxygen pond Chlorination Chemical coagulation None of these ANSWER DOWNLOAD EXAMIANS APP
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