International General Certificate of Secondary Education (IGCSE) Chemistry Practice Exam

What is an advantage of using fermentation of glucose to manufacture ethanol?

1. Uses high temperatures

2. Produces pure product

3. Uses renewable resources

4. Fast rate of reaction

The correct answer is: Uses renewable resources

Using fermentation of glucose to manufacture ethanol is advantageous primarily because it utilizes renewable resources. Glucose can be derived from various plant materials, such as sugarcane, corn, or other biomass, which are sustainable sources that can be replenished over time. This aspect of fermentation aligns with the growing emphasis on sustainability and reducing reliance on fossil fuels. By using renewable resources, the process contributes to a more environmentally-friendly approach to producing fuel and other products, promoting a cyclical use of natural materials rather than depleting finite resources. In this context, the process of fermentation not only aids in the reduction of greenhouse gas emissions but also supports agricultural economies by making use of crops that might otherwise go to waste. This characteristic of fermentation is particularly significant in discussions about energy production, climate change, and future resource management.