Q. The percentage of oxygen in inhaled air is about
A) 21%
B) 16%
C) 79%
D) 4%
Explanation
The correct answer is Option A: 21%.
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.