Which option gives an incorrect match of symbol and gas?
Answer and explanation
Correct answer: Ozone
Option C is the incorrect match. CO₂ is the molecular formula for carbon dioxide: one carbon atom is combined with two oxygen atoms. Ozone is a different form of oxygen and has the formula O₃. The other matches are correct: N₂ represents nitrogen molecules, O₂ represents oxygen molecules, and Ar is the symbol for the argon atom. The subscript indicates the number of atoms of that element in a molecule; it must not be confused with the element symbol itself.
Frequently asked questions
What is the correct answer to this question?
Ozone
Why is this the correct answer?
Option C is the incorrect match. CO₂ is the molecular formula for carbon dioxide: one carbon atom is combined with two oxygen atoms. Ozone is a different form of oxygen and has the formula O₃. The other matches are correct: N₂ represents nitrogen molecules, O₂ represents oxygen molecules, and Ar is the symbol for the argon atom. The subscript indicates the number of atoms of that element in a molecule; it must not be confused with the element symbol itself.
Which subject and chapter does this question cover?
This is a Class 11 Accountancy question. Chapter: Theory Base of Accounting.
