Q. Domestic sewage contains
A) Suspended solid
B) Colloidal material
C) Dissolved material
D) All of these
Explanation
Domestic sewage contains Suspended solid, $e.g.,$ sand, silt and clay Colloidal material, $e.g.,$ faecal matter, bacteria, paper and cloth fibres Dissolved material, $e.g.,$ nitrates, ammonia phosphate, sodium, calcium salt
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.