Multiple choice

Complete combustion of hydrocarbon produces

  1. CO and water.

  2. CO and Hydrogen.

  3. CO2 and H2.

  4. CO2 and H2O.

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Complete combustion of hydrocarbons produces carbon dioxide (CO2) and water (H2O). This is the balanced equation: CxHy + (x + y/4)O2 → xCO2 + (y/2)H2O. Carbon monoxide (CO) is a product of incomplete combustion.