Process Diagram

Band 6+: You should spend about 20 minutes on this task. The diagram below shows how salt is removed from seawater to make it drinkable. Summarize the information by selecting and reporting the main features and make comparisons where relevant. 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 salt is removed from seawater to make it drinkable. Summarize the information by selecting and reporting the main features and make comparisons where relevant. Write at least 150 words.

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

The image details a desalination process diagram: sea water intake leads to pre-treatment filter; filtered water is returned to sea; water is then forced through a high-pressure membrane; post-treatment includes lime, chlorine, fluoride; storage follows; finally, water is integrated into the supply system; inset shows molecular separation, highlighting salt, impurities, and water molecules.

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

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Note: Both the topic and the answer were created by one of our users.

The illustration describes how salt is separated from sea water to make it possible to drink. Overall, it is man-made linear process which contains five steps. The salt water is taken from the sea, then it is processed through several filters, after that is kept in the storage, and, subsequently, is sent to integrated water supply system.

At the first stage, salt water flew through the pipe to pre-treatment filter, where filter backwash is separated, and, then it returned to the sea. Following this, pre-treated water is forced via membrane at high pressure with salt and impurities being separated from water molecules, and then sea water concentrate also is returned to the sea through the separate pipeline.

Once the water is processed on the previous stages, it is then passed through post-treatment with lime chorine and fluoride. On the final stage, the water is gathered in the storage, after which it is added to integrated water supply system for further use by people.

Word Count: 163

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Overall Band Score

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Vocabulary Complexity:
C1 - Intricate
Strive to incorporate even richer and more precise language.

Grammar Mistakes: N/A

Vocabulary Repetition:

water: 10

through: 4

separated: 3

Try using synonyms for the above words

Task Response

The report adequately covers the desalination process, presenting a clear overview and detailing the key stages. However, there's room for improvement in terms of elaborating on the specifics of each stage and enhancing the overall structure for better flow. To improve, consider adding more detail to each stage of the process, such as the purpose of each filter or chemical used in post-treatment. Also, ensure a more cohesive structure by using varied linking words and phrases to connect the stages more smoothly.

Coherence & Cohesion

The report presents a generally clear overview of the desalination process. However, the organization could be improved for better flow. Consider using more varied cohesive devices to link ideas within and between paragraphs. For instance, instead of repeatedly using 'then,' explore alternatives like 'subsequently,' 'thereafter,' or 'following this step.' The introduction and conclusion are somewhat basic; elaborating slightly on the significance or impact of the process could enhance coherence.

Lexical Resource

The vocabulary is adequate for describing the process, but there's room for improvement. Using more specific and technical terms related to desalination could elevate the report. For example, instead of 'flew through the pipe,' consider 'is pumped through a pipeline.' Varying your word choice and incorporating more precise language will demonstrate a broader lexical range.

Grammatical Range & Accuracy

The report contains grammatical errors that affect clarity. Pay close attention to subject-verb agreement, correct tense usage, and article usage ('the,' 'a,' 'an'). For example, 'salt water flew' should be 'salt water flows' or 'is pumped.' Also, review sentence structure to avoid awkward phrasing. Proofreading carefully and focusing on grammatical accuracy will improve the overall quality of your writing.

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