1.

What is a source of energy ? What are the two main categories of the sources of energy ?

Answer»

Solution :A GOOD source of energy is one :
(i) which would give a LARGE AMOUNT of energy per unit mass (or per unit volume)
(ii) Which is cheap and easily available
(iii) which is easy to store and transport
(iv) Which is safe to HANDLE and use, and
(v) which does not cause environmental pollution.


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