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Envt- Waste Water Characteristics-quiz (App update required to attempt this test)
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Question 1
If the moisture content of a sludge is 99% and it is stored in a container of volume 0.255 m3, then what will be the volume of the sludge if the water content is reduced to 92%?
Question 2
As per the environment protection rules, the permissible limit for the total suspended solids for disposal over marine coasts is
Question 3
It was given that the threshold odour number of a sample of water was 8 then find out the amount of distilled water that needs to be added to 250 ml of sample so that its odour is hardly detectable.
Question 4
In which of the following zones the concentration of dissolved oxygen drops below 4ppm?
Question 5
What is theoretical oxygen demand of 150 mg/L glucose solution?
Question 6
A certain water needs alum treatment to the extent of 12 ppm. How much alum, in quintals per day, would be needed to treat 15 MLD of water?
Question 7
The maximum BOD (in mg/l) present in a solution of glucose of concentration 330 mg/l.
Question 8
The relation stability of a sewage sample, whose D.O equals the total oxygen required to satisfy its BOD, is
Question 9
Rate of oxidation of organic matter depends upon
Question 10
Match the following:
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May 5ESE & GATE CE