What is the correct chemical symbol of carbon dioxide in the atmosphere?
Answer and explanation
Correct answer: CO₂
The governing concept is chemical composition: carbon dioxide contains one carbon atom and two oxygen atoms. Therefore its formula is written as CO₂, making option B correct. O₂ represents molecular oxygen, N₂ represents molecular nitrogen, and Ar is the symbol for argon. Carbon dioxide is also involved in photosynthesis and contributes to the greenhouse effect, but those roles do not change its formula.
Frequently asked questions
What is the correct answer to this question?
CO₂
Why is this the correct answer?
The governing concept is chemical composition: carbon dioxide contains one carbon atom and two oxygen atoms. Therefore its formula is written as CO₂, making option B correct. O₂ represents molecular oxygen, N₂ represents molecular nitrogen, and Ar is the symbol for argon. Carbon dioxide is also involved in photosynthesis and contributes to the greenhouse effect, but those roles do not change its formula.
Which subject and chapter does this question cover?
This is a Class 11 Accountancy question. Chapter: Theory Base of Accounting.
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