Environmental Engineering in CE Suspended solid present in the waste water generated in blast furnace gas cooling and cleaning plant is removed by Biological oxygen pond Lagoons Filtration Radial settling tank (thickener) using coagulant (lime & ferrous sulphate) Biological oxygen pond Lagoons Filtration Radial settling tank (thickener) using coagulant (lime & ferrous sulphate) ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE From pollution control point of view, the maximum permissible concentration of sulphur dioxide in atmospheric air is about __________ ppm. 500 5 1 50 500 5 1 50 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE The widest explosive limit is of __________ , thereby making it the most explosive gas. Acetylene Petrol vapor Hydrogen Carbon monoxide Acetylene Petrol vapor Hydrogen Carbon monoxide ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE The ratio of oxygen available to the oxygen required for stabilisation of sewage is called the Oxygen ion concentration Bacterial stability factor Biological oxygen demand (BOD) Relative stability Oxygen ion concentration Bacterial stability factor Biological oxygen demand (BOD) Relative stability ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Exposure to SO₂ containing chimney gases results in the Increased drying & hardening time of paints Reduction in strength of leather & cloth Acceleration of corrosion rates of metals All of these Increased drying & hardening time of paints Reduction in strength of leather & cloth Acceleration of corrosion rates of metals All of these ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE High noise level in a chemical plant can be controlled by the Path control of noise All of these Protection of operating personnel Suppression of noise at the source itself Path control of noise All of these Protection of operating personnel Suppression of noise at the source itself ANSWER DOWNLOAD EXAMIANS APP
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