Question

Q. <!--td {border: 1px solid #ccc;}br {mso-data-placement:same-cell;}--> Arrange the following atmospheric gasses in decreasing order of their concentration in the Atmosphere:

Select the correct answer using the code given below:

• A. 1-2-3-4
• B. 2-1-3-4
• C. 4-3-1-2
• D. 2-3-4-1

Answer 1

The correct option is B 2-1-3-4

Explanation:

Nitrogen N2 78.08
Oxygen O2 20.95
Argon Ar 0.93
Neon Ne 0.0018
Helium He 0.0005
Hydrogen H2 0.00005
Xenon Xe 0.000009