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Syllabus

Sources of Energy — Syllabus

NIOS · Class 10 · Science & Tech

What Sources of Energy covers in NIOS Class 10 Science & Tech: 4 topics, for the 2026-27 session. Part of the NIOS Class 10 Science & Tech syllabus.

44 questions45 flashcards5 concepts

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A diagram illustrating the nuclear fusion process, where two light nuclei combine under extreme conditions to form a heavier, more stable nucleus, releasing a large amount of energy.
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4 Topics · NIOS Class 10 Science & Tech · 2026-27

Topics in Sources of Energy

1

1. Energy and Sources of Energy

  • Energy is defined as the ability to do work.
  • A body having energy is capable of doing work.
  • Energy appears in many forms such as heat, light, mechanical, electrical, chemical, sound, and nuclear energy.
2

2. Non-Renewable Sources of Energy

  • Coal, crude oil, natural gas, and uranium are non-renewable sources of energy.
  • Fossil fuels such as coal, oil, and natural gas are conventional sources of energy.
  • Over 85% of energy demands are met by combustion of fossil fuels.
3

3. Coal and Natural Gas

  • Coal is formed by coalification.
  • Types of coal are peat, lignite, sub-bituminous, and bituminous.
  • Peat is the first or earliest stage of coal formation.
4

4. Nuclear Energy

  • Nuclear energy comes from the nucleus of an atom.
  • Nuclear fission is the splitting of a heavy nucleus into roughly equal lighter fragments with release of energy.
  • Nuclear fusion is the combining of light nuclei to form a heavier nucleus with release of energy.

Key Concepts

Central concept: Sources of energy are the different ways usable energy is obtained for daily life, industry, transport, and electricity generation.

EnergySource of energyNon-renewable sourcesRenewable sourcesSun as ultimate sourceFossil fuelsCoalNatural gas

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Frequently Asked Questions

What are the important topics in Sources of Energy for NIOS Class 10 Science & Tech?
Key topics in Sources of Energy include Energy and Sources of Energy, Non-Renewable Sources of Energy, Coal and Natural Gas, Nuclear Energy. Study these first, then practise questions on each for the NIOS Class 10 board exam.
How should I revise Sources of Energy for the NIOS Class 10 board exam?
Learn the core ideas first, then work through the 44 practice questions on Sources of Energy. Revise definitions regularly and use flashcards for quick recall before the exam.

Sources & Official References

Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.

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