Which statement about nitrogen is most accurate?
Answer and explanation
Correct answer: It is the major gas in air but is not the main gas used in respiration.
Nitrogen makes up about 78% of dry air, so it is the most abundant atmospheric gas, not the least abundant. Human and animal respiration mainly uses oxygen, while nitrogen is not directly used in that process. Nitrogen can participate in the nitrogen cycle, but it does not always become water vapour, and ozone—not nitrogen—is chiefly associated with ultraviolet absorption.
Frequently asked questions
What is the correct answer to this question?
It is the major gas in air but is not the main gas used in respiration.
Why is this the correct answer?
Nitrogen makes up about 78% of dry air, so it is the most abundant atmospheric gas, not the least abundant. Human and animal respiration mainly uses oxygen, while nitrogen is not directly used in that process. Nitrogen can participate in the nitrogen cycle, but it does not always become water vapour, and ozone—not nitrogen—is chiefly associated with ultraviolet absorption.
Which subject and chapter does this question cover?
This is a Class 11 Accountancy question. Chapter: Financial Statements I. Topic: Distinction.
