Which of the Following Statements Is LEAST-Likely True

question 17

Multiple Choice

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.

---

Definitions:

Cloaca

A common cavity at the end of the digestive tract for the release of both excretory and genital products in many vertebrates, excluding most mammals.

Excretion

The process by which metabolic waste products and toxic substances are removed from the body of an organism.