1.

Which of the following is a secondary treatment for water pollution?(a) Sedimentation(b) By the action of microbes(c) Removal of nitrates(d) FiltrationThe question was posed to me at a job interview.This question is from Environmental Issues topic in chapter Environmental Issues of Biology – Class 12

Answer»

The correct CHOICE is (b) By the ACTION of microbes

The best explanation: Also known as the ACTIVE sludge process, in this method, the seed sludge is ADDED to the wastewater for its further breakdown. This happens with the HELP of microbes that consume the remaining organic matter.



Discussion

No Comment Found

Related InterviewSolutions