Q. Primary treatment is the
A) Physical removal of large and small particles from sewage
B) Biological removal of large and small particles from sewage
C) Both (a) and (b)
D) Chemical removal of large and small particles from sewage
Explanation
Primary treatment is the physical removal of large and small particles from sewage
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.