Q62 of 102 Page 77

Which of the following can be beaten into thin sheets? Why?

(a) Zinc


(p) Phosphorus


(c)Sulphur


(d) Oxygen

The correct answer is (a).

Zinc is metal and it can be beaten into thin sheets. The property of metals which allows metals to be hammered into thin sheets is called Malleability.


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61

Why are metals used for making bells?

 61

Why is phosphorus kept under water?

 63

Match the substances given in column A with their uses given in column B:

Column A


(i) Gold


(ii) Iron


(iii) Aluminium


(iv) Carbon


(v) Copper


(vi) Mercury


Column B


(a) Thermometers


(b) Electric wires


(c) Wrapping food


(d) Jewellery


(e) Machinery


(f) Fuel

 64

Give one use each of the following metals:

(a) Iron


(b) Copper


(c) Aluminium


(d) Zinc


(e) Mercury