Q. Name the four elements called ‘Big-four’ which make up 95% of all elements found in a living system
A) C, H, O, P
B) C, H, O, N
C) C, N, O, K
D) C, H, O, S
Explanation
The four main elements found in a living system which make 95% of all elements are Carbon – 18.5% Hydrogen – 0.5% Oxygen – 65% Nitrogen – 3.3% These four elements are called ‘Big-four’ elements
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.