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1. What is CNG? Give its one use.2. From which natural substance are liquid fuels formed?
3. Which gas is the main constituent of LPG?
b>4. How was petroleum formed in nature?
5. Why do green leaves not catch fire easily?
- CNG — Compressed Natural Gas. It is used as fuel.
- All liquid fuels are formed from petroleum.
- Butane is the main constituent of LPG.
- Petroleum was formed by the sedimentation of dead remains of microscopic marine plants and animals, which were buried under the surface of the earth, millions of years ago.
- Green leaves do not catch fire easily because they contain moisture.
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