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Chemistry
3. Metals and Non-Metals
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Q14 of 53 Page 71

List three properties of sodium in which it differs from the general physical properties of most of the metals.

The three properties of sodium are as follows:

1. Sodium is very soft in nature and it can be easily cut with the help of a knife.


2. It is non-sonorous metal which means it does not make sound on being hit by hard object.


3. It has low melting and boiling points.


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12

Why Al metal cannot be obtained by the reduction of Al2O3 with coke? Explain.

13

A solution of CuSO4 was kept in an iron pot. After few days, the iron pot was found to have a number of holes in it. Explain the reason in terms of reactivity. Write the equation of the reaction involved.

15

An ore, on heating in air, give Sulphur dioxide gas. Name the method in each metallurgical step that will be required to extract this metal from its ore.

15

State which of the following reactions will take place or which will not, giving a suitable reason for each?

Zn(s) + CuSO4(aq) → ZnSO4(aq) + Cu(s)


Fe(s) + ZnSO4(aq) → FeSO4(aq) + Zn(s)

Questions · 53
3. Metals and Non-Metals
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