NCERT Solution for Class 10 Science Chapter 14
Sources of Energy
NCERT Books for Session 2022-2023
CBSE Board and UP Board
Intext Questions
Page No-253
Questions No-1
Can any source of energy be pollution-free? Why or why not?
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NCERT Solution for Class 10 Science Chapter 14
Sources of Energy
NCERT Books for Session 2022-2023
CBSE Board and UP Board
Intext Questions
Page No-253
Questions No-1
No source of energy can be pollution-free. It is considered that solar cells are pollution-free. However, even their making causes environmental damage indirectly. Also, in the case of nuclear energy, there is no waste produced after the fusion reactions. However, it is not totally pollution-free. To start the fusion reactions, approximately 107 K temperature is required, which is provided by fission reactions. The wastes released from fission reactions are very hazardous. Hence, no source of energy is pollution-free.
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Many sources of energy can be pollution free. When burning of biomass is not involved in production of energy, then there is no chance of pollution. For example; wind energy, hydel energy, solar energy, etc. are pollution free.