Waste Water Engineering A safety lamp when inserted in the upper portion of a manhole causes flames. It indicates the presence of Petrol vapours Methane gas Hydrogen sulphide gas Carbondioxide gas Petrol vapours Methane gas Hydrogen sulphide gas Carbondioxide gas ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering Acid regression stage of sludge digestion at a temperature 21°C extends over a period of 15 days 90 days 30 days 60 days 15 days 90 days 30 days 60 days ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering The dimensions of a rectangular settling tank are: length 24 m, width 6 m and depth 3 m. If 2 hour detention period for tanks is recommended, the rate of flow of sewage per hour, is 208 cu.m 204 cu.m 216 cu.m 212 cu.m 208 cu.m 204 cu.m 216 cu.m 212 cu.m ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering The sewer which resists sulphide corrosion, is Lead sewer Cast iron sewer R.C. sewer Brick sewer Lead sewer Cast iron sewer R.C. sewer Brick sewer ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering The asbestos cement pipes are generally laid At an angle of 60° Horizontally Vertically At an angle of 30° At an angle of 60° Horizontally Vertically At an angle of 30° ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering A rainfall may be classified as acidic if its pH value is less or equal to 6 7 6.5 5 6 7 6.5 5 ANSWER DOWNLOAD EXAMIANS APP
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