Q.

Which of the following is the most common element in the Universe?

A. Nitrogen
B. Oxygen
C. Hydrogen
D. Carbon
Answer» C. Hydrogen
Explanation: Hydrogen is the most abundant element in the Universe; helium is second. However, after this, the rank of abundance does not continue to correspond to the atomicnumber; oxygen has abundance rank 3, but atomic number 8. All others are substantially less common.
688
0
Do you find this helpful?
3

View all MCQs in

Physics

Discussion

No comments yet