Microbes In Human Welfare Question 19
Question: Sewage purification is done by:
Options:
A) Microbes
B) Fertilisers
C) Antibiotics
D) Antiseptics
Show Answer
Answer:
Correct Answer: A
Solution:
[a] Sewage is a waste material (like human urine and faeces) that is carried away from homes and other buildings in a system of pipes.
Sewage treatment is the process of removing contaminants from wastewater which is done by heterotrophic microbes naturally present in sewage.
BETA
