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ISRO 2023 Quiz 16 Revision
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Question 1
The density of population over 40 hectares is 250/hectare. If water supply demand per day is 200 liters and sewage discharge is 80% of water supply, the sewage flow in sewers of separate system is ______.(Assume Dry weather flow)
Question 2
Before discharging the foul sewage into rivers, it is generally treated by ______.
Question 3
One litre of sewage, when allowed to settle for 30 minutes gives a sludge volume of 30 cm3. If the dry weight of this sludge is 6 grams, then its sludge volume index is:
Question 4
Compute the theoretical oxygen demand of the water that contains 25 mg/l of benzene?
Question 5
Select the related word/letters/ number from the given alternatives.
Globes : Bestow :: Dared : ?
Globes : Bestow :: Dared : ?
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Nov 30ESE & GATE CE
