Which of the following statements is LEAST-Likely true? A)NO_X is formed when nitrogen and O₂ combine in the combustion chamber at sustained high temperatures in excess of 2,500°F. B)When NO_X is combined with HCs in the presence of sunlight, smog is formed. C)Deposits are more common on engines with low mileage. D)A lean air-fuel ratio can increase NO_X when it causes preignition.

Question

Quizplus · Accepted Answer

It is widely known that deposits typically form on engines with high mileage, not low mileage. Options A, B, and D all relate to the formation of nitrogen oxides (NOx) in combustion engines, which is a well-documented phenomenon.

Which of the Following Statements Is LEAST-Likely True