Phenols are added in gasoline to____________________?
Correct answer: D. Act as an antioxidant
- A. Improve the octane number
- B. Increase its pour point
- C. Reduce its viscosity
- D. Act as an antioxidant
Explanation
Phenols act as antioxidants by interrupting free-radical oxidation reactions that produce gums and other unstable products in gasoline. They are not primarily added to alter viscosity or pour point.
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