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Q. |
In a S.I. engine, when most economical mixture is supplied, the colour of exhaust flame is expected to be |
A. | Yellow-red to red |
B. | Dark red |
C. | Bluish, transparent |
D. | Dark blue to reddish-yellow |
E. | Colour of exhaust flame has nothing to do with the mixture composition |
Answer» D. Dark blue to reddish-yellow |
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