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| Q. |
During which of the following operating conditions of an auto-mobile, carbon monoxide content in exhaust gas is maximum? |
| A. | Acceleration |
| B. | Cruising |
| C. | Idle running |
| D. | Deacceleration |
| Answer» C. Idle running | |
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Explanation: High Carbon Monoxide (CO) content in exhaust gas of automobiles usually indicate a fuel mixture richer than ideal (rich mixture - air fuel ratio below 14.7). |
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