Which one of the following is <strong>NOT</strong> an oxidation reaction?

  1. A. Rusting of iron
  2. B. Opening of soda bottle
  3. C. Rancidity
  4. D. Combustion

Correct Answer: B. Opening of soda bottle

Explanation

Opening a soda bottle is a physical change caused by the release of dissolved CO_2 due to a drop in pressure. It does not involve any electron transfer or oxidation.

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