Question

the reason for the following
a) school bells are made up of metals
b) the electric wires are made up of copper
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Answer 1

Answer:

(a) It is because metals are sonorous, i.e. they produce sound when struk with a hard substance.

(b) It-is because copper is good conductor of electricity.

Answer 2

explanation:

(i) School bells are made up of metals. ...

(i) Metals are sonorous (produce sound on being hit), so - school bells are made up of metals.

(ii) the electric wires are made up of copper

(ii) Copper is a very good conductor of electricity. So, it is used for making electrical wires

I hope this is your answer