What is the basis for calling nitrogen and oxygen the major gases in atmospheric composition?
Answer and explanation
Correct answer: Together they form most of dry air
Nitrogen and oxygen are called major gases because they make up nearly all of dry air by volume: nitrogen is about 78% and oxygen about 21%, with the remaining fraction containing argon, carbon dioxide and other gases. Their abundance, not their location or cloud-forming role, is the basis for the term. Therefore option A is correct.
Frequently asked questions
What is the correct answer to this question?
Together they form most of dry air
Why is this the correct answer?
Nitrogen and oxygen are called major gases because they make up nearly all of dry air by volume: nitrogen is about 78% and oxygen about 21%, with the remaining fraction containing argon, carbon dioxide and other gases. Their abundance, not their location or cloud-forming role, is the basis for the term. Therefore option A is correct.
Which subject and chapter does this question cover?
This is a Class 11 Accountancy question. Chapter: Theory Base of Accounting.
