Process Diagram

Band 8+: You should spend about 20 minutes on this task. The diagram below shows how ethanol fuel is produced from corn. Summarise the information by selecting and reporting the main features and make comparisons where relevant. You should write at least 150 words.

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Image for topic: You should spend about 20 minutes on this task. The diagram below shows how ethanol fuel is produced from corn. Summarise the information by selecting and reporting the main features and make comparisons where relevant. You should write at least 150 words.

Our system will evaluate the answer based on this AI-generated description.

The image demonstrates a linear process diagram showing corn to ethanol fuel: Corn undergoes Storing, followed by Milling, which requires Water, then Cooking for 4 hours, then Fermenting for 48 hours, then Separating into Liquid and Solid byproduct, Liquid undergoes Purifying ethanol for 5 hours, then Storing, and finally Transporting.

Given the complexity of the image, the above description may not be entirely accurate.

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The diagram below illustrates how ethanol fuel is made from corn.

Overall, the process has a number of steps, starting with corn and ending with the transportation of ethanol. First, the corn is prepared in several ways, and then it goes through fermentation. After that, the liquid is separated and purified before it is stored and transported.

Initially, the corn is stored and then milled. After milling, it is cooked for 4 hours. Water is added during cooking. Next, the cooked corn is fermented for 48 hours. Following fermentation, the mixture is separated. During this stage, liquid and solid by-product is produced. The solid is removed, and the liquid continues to the next stage.

The liquid then goes to purifying stage, which takes 5 hours. After it is purified, the ethanol is stored. Finally, it is transported to where it is needed.

To sum up, ethanol is produced by corn through a number of steps including milling, cooking, fermenting, separating and purifying, followed by storage and transportation.

Word Count: 167

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Overall Band Score

(+/- 0.5)

Vocabulary Complexity:
B2 - Upper Intermediate
Opt for even more advanced words when appropriate.

Grammar Mistakes: N/A

Vocabulary Repetition:

ethanol: 4

liquid: 4

after: 3

stored: 3

hours: 3

Try using synonyms for the above words

Task Response

The report fully satisfies the requirements of the task. It provides a clear overview of the process, accurately describes the sequential stages, and includes specific details such as time durations and by-products. The information is organized logically, and the progression from raw material to final product is easy to follow. The summary at the end, while slightly repetitive of the overview, reinforces the main stages effectively.

Coherence & Cohesion

The report is very well-organized, following a logical progression that mirrors the stages of the process. The use of cohesive devices such as 'Initially', 'After that', 'Next', and 'Following fermentation' helps the reader follow the sequence effortlessly. To reach a higher band, you could use more sophisticated transitional phrases to link the stages more fluidly, rather than relying on a series of simple sequential markers.

Lexical Resource

The vocabulary used is appropriate and accurate for describing a process. You correctly used terms like 'milled', 'fermented', and 'purified'. However, the lexical range is somewhat limited and repetitive (e.g., using 'stored' and 'transported' multiple times). To improve, try to incorporate more varied synonyms or more complex noun phrases to describe the stages, such as 'the purification process' or 'the subsequent storage phase'.

Grammatical Range & Accuracy

The report demonstrates a good command of the passive voice, which is essential for process descriptions. Most sentences are error-free and clear. There are minor issues with article usage (e.g., 'goes to purifying stage' should be 'goes to the purifying stage') and some sentence structures are quite simple. Increasing the use of complex sentence structures, such as combining steps using relative clauses (e.g., 'After being cooked for four hours, the corn is then fermented...'), would enhance the grammatical range.

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