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17 January, 10:09

Which of the following is a chemical reaction?

1 - Dropping a sliced orange into a vat of Sodium Dydroxide

2-Cutting a piece of paper into two pieces

3-Filling a balloon with air

4-Freezing liquid Mercury

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Answers (2)
  1. 17 January, 10:11
    0
    Dropping a sliced orange into a vat of sodium dydroxide
  2. 17 January, 10:30
    0
    1 - Dropping a sliced orange into a vat of Sodium Dydroxide

    Explanation:

    The other answers (2-4) are only physical changes that don't change any chemical compositions.
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