Waste Water Engineering Bio-chemical oxygen demand (BOD) for the first 20 days in generally referred to First stage demand Initial demand All of these Carbonaceous demand First stage demand Initial demand All of these Carbonaceous demand ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering Oxidation process results in the formation of All of these Carbon dioxide Sulphates Nitrates All of these Carbon dioxide Sulphates Nitrates ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering The algae dies out in the zone of Recovery Degradation Active decomposition Cleaner water Recovery Degradation Active decomposition Cleaner water ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering For the COD test of sewage, organic matter is oxidised by K₂Cr₂O₇ in the presence of None of these HNO₃ HCl H₂SO₄ None of these HNO₃ HCl H₂SO₄ ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering Aerobic bacterias Consume organic matter as their food All of these Oxidise organic matter in sewage Flourish in the presence of free oxygen Consume organic matter as their food All of these Oxidise organic matter in sewage Flourish in the presence of free oxygen ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering The digested sludge from septic tanks, is removed after a maximum period of 5 years 4 years 3.5 years 3 years 5 years 4 years 3.5 years 3 years ANSWER DOWNLOAD EXAMIANS APP
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