NEET Solved Paper 2017 Question 72
Question: Which of the following in sewage treatment removes suspended solids?
Options:
A) Sludge treatment
B) Tertiary treatment
C) Secondary treatment
D) Primary treatment
Show Answer
Answer:
Correct Answer: D
Solution:
- Primary treatment in sewage treatment involves the removal of suspended solids from the wastewater. This is typically achieved through physical processes such as sedimentation, where heavier solids settle to the bottom of a sedimentation tank, and lighter materials like grease and oils are skimmed off the surface.