Multiple choice

Which of the following statements is true?

  1. Ozone is a mono-atomic form of oxygen

  2. Ozone is a poisonous gas

  3. Ozone is present in the lower atmosphere

  4. Ozone reflects the sun's rays
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Ozone is indeed a poisonous/toxic gas that can cause respiratory damage. It is triatomic (O3), not mono-atomic. It is found in the stratosphere (upper atmosphere), not the lower atmosphere, and it absorbs UV radiation rather than reflecting it.

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