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 gas - at ground level it is harmful to breathe and can damage lung tissue and plant life. It is triatomic (O3, not mono-atomic), found primarily in the upper atmosphere (stratosphere, not lower), and absorbs UV radiation rather than reflecting it. Statement B is the only true statement among the options.

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