Multiple choice general knowledge

Exhaust of your vehicle contains -

  1. Oxygen, nitrogen and water

  2. Carbon-dioxide, nitrogen and water

  3. Carbon-monoxide, nitrogen-oxides & hydrocarbons

  4. Oxygen, nitrogen
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Vehicle exhaust primarily contains harmful pollutants from incomplete combustion. Carbon monoxide (CO) forms when fuel doesn't burn completely, nitrogen oxides (NOx) are created at high combustion temperatures, and unburnt hydrocarbons (HC) escape from the engine. While exhaust also contains CO2 and water vapor from complete combustion, option C correctly lists the hazardous pollutants that vehicle emission systems are designed to reduce.

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