Assertion : Primary treatment of sewage is also called biological treatment.
Reason : Primary sewage treatment depends only on density of materials in sewage
Dear Student,
Assertion and reaason both are wrong.
Explaination:-
A: secondary treatment of sewage is also called biological treatment because in secondary treatment biological factors/organisms play a major role in the treatment.
R: It does not only depends on density of materials present.
Regards.
Assertion and reaason both are wrong.
Explaination:-
A: secondary treatment of sewage is also called biological treatment because in secondary treatment biological factors/organisms play a major role in the treatment.
R: It does not only depends on density of materials present.
Regards.