In a diesel engine exhaust system, the cooling of the exhaust gases below their dew point, will result in __________.

Correct Answer: Option B — sulfuric acid corrosion

Cooling exhaust gases below their dew point causes sulfur oxides to combine with condensed water vapor, forming corrosive sulfuric acid that rapidly attacks exhaust ducting, silencers, and turbocharger components, degrading vital machinery integrity.