Passage V

The higher a gasoline's octane number (ON), the more smoothly the gasoline burns, lessening engine damage. Sulfur (S), naturally present in gasoline, damages exhaust systems in cars. Table 1 gives the ON and S content of 6 gasolines (Fuels A-F).

Figures 1 and 2 show the decrease in ON resulting from using Methods 1 and 2, respectively, to reduce a gasoline's S content from a given initial value to a given final value. Consider a gasoline having an ON of 90.00 and an S content of 100 ppm. If Method 1 is used to reduce the S content to 25 ppm, Point A in Figure 1 shows that the decrease in ON will be 0.35, so the ON will decrease to 89. 65 (because 90.00 - 0.35 = 89.65).

25. A car manufacturer claims that the lowest ON of a gasoline that can be burned in a certain engine without causing damage to the engine is 88.00. Which of the gasolines listed in Table 1, if any, should be burned in the engine?

Answer and Explanation

Your Answer is

Correct Answer is C

Explanation

Read the stem of the question carefully. The stem of the question says that the fuel ON that can be used by the car engine is at least 88, then the car should use gasoline with an ON greater than or equal to 88. According to table 1, you should choose fuels C, E, and F< /p>