Q. The most abundant element is:
Answer: Oxygen
Notes: On earth, oxygen is the most common element, making up about 47% of the earth’s mass. Silicon is second, making up 28%, followed by aluminum (8%), iron (5%), magnesium (2%), calcium (4%), sodium (3%), and potassium (3%). All of the remaining elements together make up less than 1% of the earth’s mass.

This question is part of 40000+ General Studies MCQ Series Course on GKToday Android app. Question Number: 87 in General Studies Mock Test - 60 in above course in App.