Waste Water Engineering For detecting the nitrates in sewage, the colour may be developed by adding Sulphuric acid and napthamine Potassium permanganate Phenol-di -sulphuric acid and potassium hydroxide None of these Sulphuric acid and napthamine Potassium permanganate Phenol-di -sulphuric acid and potassium hydroxide None of these ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering For a continuous flow type of sedimentation tanks All listed here Length of the tank is normally kept 4 to 5 times the width Maximum horizontal flow velocity is limited to 0.3 m/minute Width of the tank is normally kept about 6 m All listed here Length of the tank is normally kept 4 to 5 times the width Maximum horizontal flow velocity is limited to 0.3 m/minute Width of the tank is normally kept about 6 m ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering The drainage area of a town is 12 hectares. Its 40% area is hard pavement ( K = 0.85), the 40% area is unpaved streets (K = 0.20) and the remaining is wooded areas (K = 0.15). Assuming the time of concentration for the areas as 30 minutes and using the formula Ps = 900/(t + 60) the maximum run off is 0.10 cumec 0.12 cumec 0.15 cumec 0.20 cumec 0.10 cumec 0.12 cumec 0.15 cumec 0.20 cumec ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering In sewage having fully oxidised organic matter, the nitrogen exists in the form of Nitrates Aluminoid nitrogen Nitrites Free ammonia Nitrates Aluminoid nitrogen Nitrites Free ammonia ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering Aerobic bacterias 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 Consume organic matter as their food ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering The rate of accumulation of sludge in septic tanks is recommended as 25 litres/person/month 30 litres/person/month 30 litres/person/year 25 litres/person/year 25 litres/person/month 30 litres/person/month 30 litres/person/year 25 litres/person/year ANSWER DOWNLOAD EXAMIANS APP
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