# What is the third most common gas found in the air we breathe _____ ? with Answer - Everyday Science Mcqs | TestPrep

> Solved MCQ: What is the third most common gas found in the air we breathe _____ ? Correct Answer: D. Argon. Verified answer explanation for FPSC, PPSC, MDCAT, NTS, and CSS competitive exam preparation.

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# What is the third most common gas found in the air we breathe _____ ?

Direct Answer & Quick Reference

The correct option is **D. Argon**.

The most common gas people breathe from clean air is nitrogen. Air is a mixture of gases, and the air on Earth contains about 78 percent nitrogen and about 21 percent oxygen. Argon...

A. Hydrogen

B. Neon

C. Carbondioxide

D. Argon **(Correct Answer)**

✨ Explain with AI

Verified Key: D. Argon
Solved by 2,628+ students

**Detailed Explanation & Reference:**

The most common gas people breathe from clean air is nitrogen. Air is a mixture of gases, and the air on Earth contains about 78 percent nitrogen and about 21 percent oxygen. Argon, carbon dioxide neon, helium, methane, krypton, hydrogen and xenon are in much smaller amounts.

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