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Q. |
Which of the following symptoms will not show that the combustion is necessarily complete or not? |
A. | Presence of free carbon in exhaust |
B. | Presence of carbon monoxide in the exhaust |
C. | Presence of oxygen is the exhaust |
D. | Presence of nitrogen in the exhaust |
E. | None of the above |
Answer» D. Presence of nitrogen in the exhaust |
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