CBSE-Materials-metals and non-metals-Test

1.   What happens when a solution of metals oxide is tested with (i) blue litmus and (ii) red litmus?

2.   What happens when sodium reacts with water?

3.   Why is sodium stored in kerosene?

4.   What happens when a metal reacts with acids?

5.   Have you ever seen a blacksmith beating an iron piece? Do you find a change in the shape of these pieces on beating? Would you expect a similar change in wood log on beating?

6.   What is malleability? Name two most malleable metals.

7.   What happens when samples of metals and non-metals are mixed with acids?

8.   Write the uses of metals and non-metals.

9.   Write the difference between metals and non-metals on the basis of their physical properties.

10.   Compare the metals and non-metals on the basis of their chemical properties.