MCQ practice · SSC Chemistry Board questions · Chapter 5: Chemical Bond
What is the formula of an ozone molecule?
Think it through first, then pick an option.
- a O₂
- b O₃
- c O₄
- d O₈
Answer and explanation
Correct answer: b O₃
Three oxygen atoms, so O₃.
Why the other options are wrong
- a O₂: O₂ is the ordinary oxygen molecule; ozone has three atoms, O₃.
- c O₄: No four-oxygen molecule is in the book; ozone is O₃.
- d O₈: The eight-atom molecule is sulfur's (S₈); ozone is O₃.
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