Which option correctly matches a gas with its chemical formula?
Answer and explanation
Correct answer: Oxygen, O₂
Molecular oxygen exists normally as a diatomic molecule, so its formula is O₂, making option B correct. Ozone contains three oxygen atoms and is written O₃, while carbon dioxide is CO₂ and argon is represented by the atomic symbol Ar because it is monatomic. Therefore options A, C and D each mismatch the gas and formula.
Frequently asked questions
What is the correct answer to this question?
Oxygen, O₂
Why is this the correct answer?
Molecular oxygen exists normally as a diatomic molecule, so its formula is O₂, making option B correct. Ozone contains three oxygen atoms and is written O₃, while carbon dioxide is CO₂ and argon is represented by the atomic symbol Ar because it is monatomic. Therefore options A, C and D each mismatch the gas and 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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