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6. What colour does a hydroxide ion turn litmus paper

  • Blue
  • Red

7. What ion gives off a chocking smell when hydrochloric acid is added?

  • Sulphite
  • Sulphate
  • Carbonate
  • Deathonate

8. What ion turns limewater milky when hydrochloric acid is added?

  • Sulphate
  • Milkoate
  • Carbonate
  • Sulphite

9. When barium chloride is added to an sulphate, sulphite and carbonate it produces and yellow precipitate

  • False
  • True

10. Which barium chloride precipitate does not dissolve when hydrochloric acid is added?

  • Sulphate
  • Sulphite
  • Carbonate