Which is the correct decreasing order of gases in air?
Answer and explanation
Correct answer: Nitrogen, oxygen, argon
The governing idea is comparison of the approximate composition of dry air. Nitrogen is about 78%, oxygen about 21%, and argon about 0.93%; therefore the decreasing order is nitrogen, oxygen, then argon. Option C is correct. Option A reverses the first two gases, option B places the least abundant of these three first, and option D incorrectly places carbon dioxide above the much more abundant nitrogen and argon.
Frequently asked questions
What is the correct answer to this question?
Nitrogen, oxygen, argon
Why is this the correct answer?
The governing idea is comparison of the approximate composition of dry air. Nitrogen is about 78%, oxygen about 21%, and argon about 0.93%; therefore the decreasing order is nitrogen, oxygen, then argon. Option C is correct. Option A reverses the first two gases, option B places the least abundant of these three first, and option D incorrectly places carbon dioxide above the much more abundant nitrogen and argon.
Which subject and chapter does this question cover?
This is a Class 11 Accountancy question. Chapter: Theory Base of Accounting.
