AI-generated practice question — model-generated for extra practice, not a previous-year CBSE board question.
When pyruvate is broken down anaerobically in yeast (fermentation), ethanol (alcohol) and carbon dioxide are produced.
Source: Chapter 5, Section 5.3 Respiration
The passage explicitly states: "pyruvate may be converted into ethanol and carbon dioxide. This process takes place in yeast during fermentation." Both products must be named for full marks. Writing only "ethanol" or only "CO₂" may result in losing the mark.