Topic Details (Notes format)

Coal and Petroleum

Subject: General Science

Book: NCERT Science Class 8

Coal and petroleum are fossil fuels formed from dead plants and animals over millions of years.
- **Coal**:
- Used for electricity generation.
- Products like coke, coal tar are derived from coal.
- **Petroleum**:
- Used as fuel in vehicles (petrol, diesel).
- Liquefied Petroleum Gas (LPG) is used for cooking.
- **Environmental Issues**:
- Burning fossil fuels leads to pollution and global warming.
- Renewable energy sources like solar and wind should be used.

**Possible Exam Questions:**
1. How are coal and petroleum formed?
2. What are the by-products of coal and their uses?
3. Why is petroleum called "black gold"?
4. Discuss the environmental effects of fossil fuel usage.
5. What are alternatives to fossil fuels for energy generation?