Physics · Environmental Pollution
The NOx emission level in engine exhaust gas can be reduced by which of the following methods?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1Use of after burner
- 2Advance spark timing or fuel injection
- 3Exhaust gas recirculation✓
- 4Thermal reactor
Correct answer
Exhaust gas recirculation
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