4.In the final step, the wastewater is treated with
a) oxygen
b) nitrogen
c) carbon dioxide
d) chlorine
5.A septic tank is suitable for places having
a) clayey soil
b) sandy soil
C) scarce freshwater
d) inadequate rainfall
Answers
Answered by
3
Answer:
in the final step the waste water is treated with chlorine
Answered by
0
Answer:
in last step it is treated with both ozone and chlorine but ozone is not there so it will be chlorine
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