What is the approximate percentage of nitrogen in the atmosphere?
Answer and explanation
Correct answer: Seventy-eight percent
Dry atmospheric air contains approximately 78% nitrogen by volume, making nitrogen the most abundant atmospheric gas. Oxygen accounts for about 21%, which explains why option A is a plausible but incorrect distractor. Carbon dioxide is close to 0.04% in modern dry air, so option D refers approximately to carbon dioxide rather than nitrogen. The remaining option is not the standard proportion of any major atmospheric gas. Therefore, option B is correct.
Frequently asked questions
What is the correct answer to this question?
Seventy-eight percent
Why is this the correct answer?
Dry atmospheric air contains approximately 78% nitrogen by volume, making nitrogen the most abundant atmospheric gas. Oxygen accounts for about 21%, which explains why option A is a plausible but incorrect distractor. Carbon dioxide is close to 0.04% in modern dry air, so option D refers approximately to carbon dioxide rather than nitrogen. The remaining option is not the standard proportion of any major atmospheric gas. Therefore, option B is correct.
Which subject and chapter does this question cover?
This is a Class 11 Accountancy question. Chapter: Trial Balance and Rectification of Errors. Topic: Preparing trial balance and correcting errors.
