Join WhatsApp ChannelDaily MCQs & Exam Updates
Chemistry Easy FPSC PPSC NTS Uploaded: 14 Jul 2026

What is the chemical formula for ozone, the molecule that forms the protective layer in the stratosphere?

  • A O
  • B O2
  • C O3
  • D O4
Correct Answer: Option C — O3
Explanation:
Ozone has the chemical formula O3 consisting of three oxygen atoms and forms the stratospheric ozone layer that absorbs harmful UV radiation protecting life on Earth.
4 views Back to Chemistry
Submitted by: PaperMCQs
Related MCQs