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

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