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Acids and Alkalis 01
The acid found in lemons is citric acid.

Acids and Alkalis 01

As a Science student, you will be familiar with using pH indicators to tell whether a substance is acidic, alkaline or neutral.

See how much you have learned by trying this quiz dealing with Acids and Alkalis.

  1. What colour is universal indicator in strong acid?
  2. Which of the following substances contain acid?
    Citrus fruit (oranges, lemons etc) contain citric acid
  3. What colour is universal indicator in a neutral solution?
  4. Which of the following pH numbers indicate a strong alkali?
    Hydrangea flowers can be blue or pink depending on the pH of the soil
  5. Which of the following pH numbers indicates a neutral substance?
  6. What colour is universal indicator in a strong alkali?
  7. Strong acids and strong alkalis are.......
  8. Which of the following acids do we have in our stomach?
    The acid kills bacteria
  9. Which of the following substances contain an alkali?
  10. Which of the following pH numbers indicates a strong acid?

Author: Sue Davison

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