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 Which of the following is the common pollutant emitted from metallurgical smelters, thermal power plant and cement plants? NOx Hg F SO₂ NOx Hg F SO₂ ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE The main type of sludge gas evolved during sewage treatment in Imhoff tank is CO CH₄ H₂ CO₂ CO CH₄ H₂ CO₂ ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Maximum allowable concentration of CO₂ in air for safe working is __________ ppm (parts per million). 2000 50 5000 1000 2000 50 5000 1000 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE In water treatment plant, zeolite process is used to remove the __________ of water. Alkalinity Iron & zinc Hardness Acidity Alkalinity Iron & zinc Hardness Acidity ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Disinfection of water is done to remove Color Bacteria Foul odour Bad taste Color Bacteria Foul odour Bad taste ANSWER DOWNLOAD EXAMIANS APP
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