Biological Classification
Quick practice
Question 1 of 5
Which of the following is the treatment of water pollution?
A
Windrow composting
B
Reverse Osmosis
C
Venturi scrubber
D
Bag house filter
Get unlimited practice with West Bengal State Exams subscription
Boost your performance with adaptive practice tests
Practice every concept in the syllabus
Compare your speed and accuracy with your peers
Download the app and practice on the go