Which is the most abundant element by mass in human body

A)
Calcium
B)
Carbon
C)
Hydrogen
D)
Oxygen

Correct Answer :   Oxygen

The most abundant elements by mass in the body of a healthy human adult are Oxygen (61.4 %), Carbon (22.9 %), Hydrogen (10.0 %) and Nitrogen (2.6 %).

Published On : June 12, 2021