Topic Details (Notes format)

Sources of Energy

Subject: General Science

Book: NCERT Science Class 10

Energy is essential for daily life and industrial processes.
- **Conventional Energy Sources**:
- Fossil Fuels (Coal, Petroleum, Natural Gas).
- Thermal and Hydro Power Plants.
- **Non-Conventional Energy Sources**:
- Solar, Wind, Geothermal, Biomass Energy.
- **Environmental Impact**:
- Fossil fuels cause pollution and climate change.
- Renewable sources are eco-friendly.

**Possible Exam Questions:**
1. Differentiate between conventional and non-conventional energy sources.
2. Why are fossil fuels considered non-renewable?
3. How does solar energy work? Discuss its advantages.
4. What are the environmental effects of using coal and petroleum?
5. Discuss the role of India in promoting renewable energy.

Practice Questions

What is the approximate age of the Earth?

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Which part of the cell contains the genetic material?

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Which organ in the human body produces bile?

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Which gas is used in fire extinguishers?

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What is the most abundant gas in the Sun?

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What type of electromagnetic radiation has the longest wavelength?

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Which process separates light into its component colors?

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What is the main purpose of stomata in plants?

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Which law states that energy cannot be created or destroyed?

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Which organelle is known as the "powerhouse of the cell"?

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