Q. For a healthy aquatic life, the amount of dissolved oxygen in a water body must be equal to
A) 5 ppm
B) 4 ppm
C) 3 ppm
D) 2 ppm
Explanation
The correct answer is Option A: 5 ppm.
A detailed explanation for this question is being prepared.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.