Environmental Engineering The most commonly used sewer under culverts is Semi-elliptical sewer Horseshoe type sewer Circular cast iron sewer Circular brick sewer Semi-elliptical sewer Horseshoe type sewer Circular cast iron sewer Circular brick sewer ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering The length of rectangular sedimentation tank should not be more than (Where ‘B’ is the width of the tank) 2B 4B 8B B 2B 4B 8B B ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering Standard BOD is measured at 20°C - 1 day 30°C - 5 day 25°C - 3 day 20°C - 5 day 20°C - 1 day 30°C - 5 day 25°C - 3 day 20°C - 5 day ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering The percentage of filtered water, which is used for backwashing in rapid sand filters, is about 0.2 to 0.4 0.4 to 1.0 2 to 4 5 to 7 0.2 to 0.4 0.4 to 1.0 2 to 4 5 to 7 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering Which of the following compounds is widely used for algae control? Sodium chloride Sodium sulphate Calcium chloride Copper sulphate Sodium chloride Sodium sulphate Calcium chloride Copper sulphate ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering Generally the detention period for grit chambers is kept as 24 hours 12 hours 1 minute 5 minutes 24 hours 12 hours 1 minute 5 minutes ANSWER DOWNLOAD EXAMIANS APP
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