Environmental Engineering in CE Thermal pollution of water increases its toxicity and oxidation of oxygen demanding waste besides favouring bacterial growth. A rise in water temperature by 10°C, doubles the toxic effects of __________ present in it. Coal ash Potassium cyanide Ortho-xylene None of these Coal ash Potassium cyanide Ortho-xylene None of these 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 Biological oxygen demand (BOD) Relative stability Bacterial stability factor Oxygen ion concentration Biological oxygen demand (BOD) Relative stability Bacterial stability factor ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Higher concentration of CO₂ in atmosphere Reflects and absorbs the longer wavelength (infra-red) radiations All of these Allows visible solar radiation (ultraviolet) of short wave-length to pass through Prevents solar heat being radiated out completely, resulting in Reflects and absorbs the longer wavelength (infra-red) radiations All of these Allows visible solar radiation (ultraviolet) of short wave-length to pass through Prevents solar heat being radiated out completely, resulting in ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE During sewage treatment, the sewage is subjected to __________ treatment in Imhoff tank. Filtration Digestion Sedimentation Both B and C Filtration Digestion Sedimentation Both B and C ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Presence of a certain minimum quantity of flourine is desirable in potable water to prevent Dental cavities Corrosion Scale formation Water-borne disease Dental cavities Corrosion Scale formation Water-borne disease ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Phenolic water generated in coke ovens & by-product plant of a steel plant are disposed off by Filtration and recycling for cooling coke oven gas None of these Discharging in the river stream Quenching of hot coke Filtration and recycling for cooling coke oven gas None of these Discharging in the river stream Quenching of hot coke ANSWER DOWNLOAD EXAMIANS APP
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