Q75
Oxides of nitrogen in the engines exhaust can be reduced by the following methods: 1. Decrease in compression ratio 2. Exhaust gas recirculation 3. Use of 5% lean mixture 4. Use of oxidation catalysts in exhaust manifold. The correct methods are
A.
1 and 2
AnswerB.
1 and 3
C.
1, 2 and 4
D.
2, 3 and 4
Answer: Option A
Solution
Answer: Option A
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