Commercial sources of energy are :
(A) Animal waste
(B) Coal
(C) Dried husk
(D) Petroleum
(E) Electricity
Choose the correct answer from the options given below :
Answer & explanation
Correct answer: option 3
The correct answer is option (3) : (B), (D) and (E) Only
Sources of Energy: There are commercial and non-commercial sources of energy. Commercial sources are coal, petroleum and electricity as they are bought and sold. Non-commercial sources of energy are firewood, agricultural waste and dried dung. These are noncommercial as they are found in nature/forests.
****** from Old NCERT Book : Infrastructure