Multiple choice

Which of the following is used to prepare oxygen in laboratory by using a catalyst, manganese dioxide?

  1. Hydrogen peroxide

  2. Potassium chlorate

  3. Potassium nitrate

  4. Ozone

  5. Oxygen cannot be prepared in laboratory

Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Oxygen is prepared in laboratory by using a catalyst called manganese dioxide on hydrogen peroxide.