INTRODUCTION - Chapter 14 - Sources & Energy - Ncert Solutions class 10 - Science
Updated On 26-08-2025 By Lithanya
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Question 1:
What is a good source of energy?
Answer:
A good source of energy fulfils the following criteria:
(I)It produces a lot of heat per unit mass.
(II) It does a huge amount of work per unit mass.
(III) It is easily accessible.
(IV) It is easy to store and transport.
(V)It is economical.
(VI)It produces less amount of smoke.
Question 2:
What is a good fuel?
Answer:
A good fuel produces a huge amount of heat on burning, does not produce a lot of smoke, and is easily available.
Question 3:
If you could use any source of energy for heating your food, which one would you use and why?
Answer:
Natural gas can be used for heating and cooking food because it is a clean source of energy. It does not produce huge amount of smoke on burning. Although it is highly inflammable, it is easy to use, transport, and it produces a huge amount of heat on burning.
