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Question
We studied that on combustion of alkanes a huge amount of energy is released. This makes hydrocarbons a very good source of energy and they are used in different fuels. Find out the hydrocarbons that are present in the following fuels.
- LPG
- LNG
- CNG
- Diesel
- Petrol
Short Answer
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Solution
| Fuel | Main Hydrocarbons Present |
|---|---|
| (i) LPG (Liquefied Petroleum Gas) | Propane (C3H8) and Butane (C4H10) |
| (ii) LNG (Liquefied Natural Gas) | Methane (CH4) (typically above 85-90%) |
| (iii) CNG (Compressed Natural Gas) | Methane CH4 |
| (iv) Diesel | Long-chain Alkanes (containing roughly 12 to 20 carbon atoms, like C12H26 to C20H42) |
| (v) Petrol (Gasoline) | Medium-chain Alkanes (containing roughly 4 to 12 carbon atoms, such as Octane C8H18) |
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