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  • Which of the following is used as a catalyst in the labor...
Multiple choice

Which of the following is used as a catalyst in the laboratory preparation of oxygen?

  1. Magnesium chloride

  2. Nickel

  3. Hydrogen

  4. Helium

  5. Manganese dioxide

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

Manganese dioxide is used as a catalyst in the laboratory preparation of oxygen.

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