Question

Name the two groups in which various source of energy are classified state on what basis are they classified

Answer 1

The sources of energy can be classified into two groups on the basis of their occurence or say limitation.

Renewable sources of energy
Non-Renewable sources of energy

Answer 2

The group in which various sources of energy are classified state are renewable energy and nonrenewable energy. These sources are classified on the basis of their availability and utility.