Back to quiz

6. What happens when sodium hydroxide is added to Iron(III)?

  • A reddish-brown precipitate forms
  • It dissolves
  • A white precipitate forms
  • A blue precipitate forms
  • A green precipitate forms that slowly turns brown

7. What happens to aluminium hydroxide when sodium hydroxide is added?

  • It dissolves
  • A reddish-brown precipitate forms
  • A white precipitate forms
  • A blue precipitate forms
  • A green precipitate forms that slowly turns brown

8. What is the test for negative carbonate ions?

  • add dilute hydrochloric acid and then barium chloride solution
  • add a little aluminium powder and sodium hydroxide
  • add dilute hydrochloric acid.
  • add dilute nitric acid and silver nitrate solution.

9. What is the test for Halide ions?

  • add dilute hydrochloric acid.
  • add dilute nitric acid and silver nitrate solution.
  • add dilute hydrochloric acid and then barium chloride solution
  • add a little aluminium powder and sodium hydroxide

10. What is the test for sulfate ions?

  • add dilute nitric acid and silver nitrate solution.
  • add dilute hydrochloric acid and then barium chloride solution
  • add a little aluminium powder and sodium hydroxide
  • add dilute hydrochloric acid.

11. What is the test for nitrate ions?

  • add dilute nitric acid and silver nitrate solution.
  • add dilute hydrochloric acid.
  • add a little aluminium powder and sodium hydroxide
  • add dilute hydrochloric acid and then barium chloride solution

12. What do carbonates produce when they decompose on heating?

  • carbon dioxide
  • copper oxide

13. What colour is copper carbonate?

  • blue
  • yellow
  • green
  • white
  • black

14. What colour is zinc carbonate?

  • white
  • green
  • black
  • blue
  • yellow

15. What colour is copper oxide?

  • yellow
  • white
  • black
  • green
  • blue

16. What colour is zinc oxide when hot?

  • blue
  • white
  • yellow
  • green
  • black

17. What colour is zinc oxide when cool?

  • blue
  • yellow
  • black
  • white
  • green

18. What do all organic compounds contain?

  • potassium
  • calcium
  • carbon
  • magnesium

19. What do many organic substances produce when burnt in air?

  • carbon dioxide
  • copper oxide

20. Those that do not burn easily contain..............

  • carbon
  • copper