Fuel Technologies Problems MCQs

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1. Which fuel has the highest hydrogen-to-carbon ratio?



2. Knocking in petrol engines is mainly caused by:



3. Which parameter indicates diesel ignition quality?



4. The major impurity in coal that causes SO₂ emissions is:



5. The main cause of incomplete combustion is:



6. Fuel with high ash content generally:



7. Which fuel has the lowest calorific value per kg?



8. High moisture in coal causes:



9. Which gas is the major component of CNG?



10. High viscosity in fuel oil leads to:



11. A high octane number fuel resists:



12. The flash point indicates:



13. Greater carbon content in coal results in:



14. The main pollutant from incomplete combustion is:



15. The best fuel for high-compression engines is:



16. The major cause of SOx emissions from fuel oil is:



17. The calorific value of a fuel is measured in:



18. Which fuel is used in fuel cells?



19. The main problem with very low flash point fuels is:



20. Water contamination in fuel oil results in:



21. Heavy fuel oil requires preheating to reduce:



22. The presence of ash in coal reduces:



23. Which fuel is prone to knocking in SI engines?



24. LPG mainly contains:



25. A higher cetane number indicates:



26. Diesel engines typically suffer from:



27. Fuel atomization improves with:



28. High sulfur fuels cause:



29. CNG storage cylinders are filled at:



30. Coal with the highest carbon content is:



31. Fuel oil deposits in burners are due to:



32. Petrol engine knocking is reduced by:



33. The main cause of smoke in diesel engines is:



34. Hydrogen as a fuel has:



35. Coal gasification converts coal into:



36. Biofuels are primarily produced from:



37. The major pollutant from diesel engines is:



38. A high pour point indicates a fuel will:



39. LNG is stored at:



40. The purpose of fuel additives is:



41. Which fuel is most prone to auto-ignition?



42. Low cetane number leads to:



43. Which pollutant forms acid rain?



44. Fuel with higher volatility vaporizes:



45. Calorific value decreases with increase in:



46. Which is a renewable fuel?



47. The main component of biogas is:



48. Catalyst poisoning in fuel reformers is due to:



49. The fire point of a fuel is:



50. High ash coal results in:



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