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2. Which one is the stronger alkali

  • sodium hydroxide
  • toothpaste
  • drain cleaner

3. What is the acid in your stomach called

  • Sulfuric Acid
  • Hydrochloric Acid
  • Ethenoic Acid
  • Citric Acid

4. Which one is the strongest acid

  • Hydrochloric acid
  • Citric acid

5. What colour is neutral on the ph scale

  • blue
  • green
  • yellow
  • pink
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