Question

Which one of the following gas does not form a part of the atmosphere?

• A. Nitrogen
• B. Chlorine
• C. Carbon dioxide
• D. Oxygen

Answer 1

The correct option is B Chlorine

Nitrogen $\left(N_2\right)-78\%ofair$, Carbon dioxide $\left(C{O}_2\right)-0.04\%ofair$ and Oxygen$\left(O_2\right)-21\%ofair$ are a part of the atmosphere but chlorine $\left(C{l}_2\right)$ does not form a part of the atmosphere.