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Type: Multiple-Choice
Category: Acids and Bases
Level: Grade 7
Author: rajendra1209
Last Modified: 6 years ago

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Acids and Bases Question

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Grade 7 Acids and Bases

What happens to a phenolphthalein solution containing NaOH over time we exhale air into the solution?
  1. It remains the same.
  2. It turns pink.
  3. It becomes milky.
  4. It becomes odorless.
  5. It becomes colorless.