Environmental Engineering The self cleansing velocity for all sewers in India is usually 3.0 m/sec to 3.5 m/sec 1.0 m/sec to 1.2 m/sec 1.5 m/sec to 2.0 m/sec Less than 1.0 m/sec 3.0 m/sec to 3.5 m/sec 1.0 m/sec to 1.2 m/sec 1.5 m/sec to 2.0 m/sec Less than 1.0 m/sec ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering The amount of coagulant needed for coagulation of water increases with (i) Increase in turbidity of water (ii) Decrease in turbidity of water (iii) Increase in temperature of water (iv) Decrease in temperature of water The correct answer is (i) and (ii) (i)and(iv) (ii) and (iii) (ii) and (iv) (i) and (ii) (i)and(iv) (ii) and (iii) (ii) and (iv) ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering The hourly variation factor is usually taken as 1.5 1.8 2.7 2.0 1.5 1.8 2.7 2.0 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering For a country like India, where rainfall is mainly confined to one season, the suitable sewerage system will be Combined system Partially combined system Partially separate system Separate system Combined system Partially combined system Partially separate system Separate system ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering The process of lagooning is primarily a means of Increasing flow of sewage through imhoff tanks Reducing the excessive flow in sewers Disposing of sludge Increasing the capacity of storage reservoirs Increasing flow of sewage through imhoff tanks Reducing the excessive flow in sewers Disposing of sludge Increasing the capacity of storage reservoirs ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering Which of the following compounds is widely used for algae control? Copper sulphate Calcium chloride Sodium chloride Sodium sulphate Copper sulphate Calcium chloride Sodium chloride Sodium sulphate ANSWER DOWNLOAD EXAMIANS APP
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