20 chemistry questions

Common Entrance Chemistry – 20 Multiple choice questions
Answer all 20 questions and then press ‘Submit’
Your score and any corrections will then be shown
(Different questions each time the quiz is run)

1. What colour is magnesium oxide

2. Which of the below is a fossil fuel?

3. What is the word equation for the thermal decomposition of copper carbonate

4. What is the melting point of water?

5. Put the following processes into the correct order if you wished to obtain pure salt from rock salt

6. If water is added to anhydrous copper sulphate what would be the colour of the product?

7. What colour is copper sulphate?

8. What is the test for hydrogen gas?

9. What is the approximate number of elements?

10. A window is made out of glass because glass is

11. Pick an acidic oxide from the list

12. What colour would Universal Indcator turn when added to a strong acid?

13. The best way to separate sand from iron filings is

14. cuso4.3-300x225This apparatus is being used to collect the water produced when copper sulphate is heated.

Why is it an importeant saftety requirement not to let the open end of the delivery tube touch any water in the beaker or test tube?

15. Peter has three coloured felt pens which he labelled A, B and C.
He used the apparatus below to separate the dyes used to make colours from each of the pens.

Which pen has an ink made from 4 dyes mixed together?Chromatography_tank2

16. Which of the following would you use filtration for?

17. Metal is the best material for a radiator because it

18. What colour is sulphur?

19. What colour is magnesium oxide?

20. Ca is the symbol for which chemical element