CBSE Class 8 Science Coal and Petroleum
- story of coal
- Dear Mam/Sir Coal is a fossil fuel so why cant it be both dead plants and animals form coal when the are decayed
- cole
- what is coll
- why it is hard And Burns with less smoke
- Least polluting fuel for vehicles is __________
- what is coal
- explain why fossil fuels are exhaustible natural gas
- what is coal?
- Lowest carbon content ----
