Question: 7

Model answer by Lifestyle Training Centre

The given process diagram outlines the detailed and multifaceted stages that are necessary for the production of biofuel, specifically ethanol.

As a whole, the entire process includes a number of distinctive and complex stages: harvesting, pre-processing, processing, and final preparation for distribution.

Firstly, trees and plants, which harness sunlight and carbon dioxide for energy and growth, are harvested using machinery. The harvested biomass then undergoes a pre-processing stage to extract and separate cellulose which is required for further processing. In the next stage, this extracted material proceeds through the main processing stage, yielding sugars as the output.

In the final stage, microbes are introduced to these sugars, producing ethanol as the final product. Ethanol can then be used for a verity of applications, such as powering automobiles and even airplanes. Carbon dioxide emitted from these vehicles is subsequently absorbed by plants and trees, resulting in the continuation of the cycle.

List of vocabulary used:

1. Diagram – a visual representation of information.
2. Intricate – detailed and complex.
3. Production – the process of creating something.
4. Biofuel – fuel derived from organic matter.
5. Distinctive – clearly different or unique.
6. Harvesting – collecting crops or plants.
7. Pre-processing – initial steps to prepare material for further processing.
8. Processing – converting raw materials into a finished product.
9. Machinery – machines used to perform tasks.
10. Extract – to remove or take out.
11. Separate – to divide or set apart.
12. Cellulose – a substance found in plant cell walls.
13. Microbes – microorganisms that can cause or aid reactions.
14. Emitted – released or sent out.
15. Consumed – used up or absorbed.
16. Cycle – a repeated process or series of events.

Do you need printed IELTS/ OET practice material? Place your order today. Available now for just Rs: 1,100 (including shipping all across India) Contact us at our WhatsApp number: +91 9886926773 to place your order. (Free for LTC students)