Multiple choice

Which of the following statements is incorrect about oxygen?

  1. It is one of the major constituents of air.

  2. It is non-poisonous for anaerobic organisms.

  3. It is an essential component of nucleic acids and lipids.

  4. It is found as oxides of silicon in the earth's crust.
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Oxygen is poisonous for anaerobic organisms as they work in the absence of oxygen.

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