Which is the correct decreasing order of gases in dry air?
Answer and explanation
Correct answer: Nitrogen, oxygen, argon, carbon dioxide
The governing concept is the composition of dry atmospheric air, meaning water vapour is excluded. Nitrogen is the most abundant gas at about 78%, followed by oxygen at about 21%. Argon is present in a much smaller proportion, while carbon dioxide is present in a trace amount. Therefore option B gives the correct decreasing order; options A, C and D incorrectly place the gases by abundance.
Frequently asked questions
What is the correct answer to this question?
Nitrogen, oxygen, argon, carbon dioxide
Why is this the correct answer?
The governing concept is the composition of dry atmospheric air, meaning water vapour is excluded. Nitrogen is the most abundant gas at about 78%, followed by oxygen at about 21%. Argon is present in a much smaller proportion, while carbon dioxide is present in a trace amount. Therefore option B gives the correct decreasing order; options A, C and D incorrectly place the gases by abundance.
Which subject and chapter does this question cover?
This is a Class 11 Accountancy question. Chapter: Theory Base of Accounting.
