Question

8. What is displacement reaction.?what happens when metal Iron is added to copper

sulphate solution.

9. Give the important differences in any two chemical properties of metals and non

metals.

10. What are basic and acidic oxide.How can we test acids and base.

11. Give the important uses of three metals and three non metals.Specify its use.

12. Give reason for the following

A. Why are metals used in electrical wires.

B. Metals are used in making jewellary?

C.Lemon pickles cannot be stored in aluminium vessels.

D.Coppersulphate becomes colourless on adding.zinc granules.

E.sodium and potassium is stored in kerosene.

F. Phosphorus vis stored in water.


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