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| Q. |
Which are the main constituents of fuel from given options? |
| A. | carbon and nitrogen |
| B. | oxygen and hydrogen |
| C. | carbon and hydrogen |
| D. | helium and oxygen |
| Answer» C. carbon and hydrogen | |
| Explanation: carbon and hydrogen are the main constituents of a fuel. in addition to them, fuel also contains sulfur, oxygen and nitrogen in minimal quantities. depending on the fuel, the percentage of carbon ranges from 50-95%, hydrogen (h2) 2-6%, oxygen (o2) 2- | |
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