Process Diagram

Band 6+: The diagram below shows how hydrogen can be made using simple laboratory equipment.

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Image for topic: The diagram below shows how hydrogen can be made using simple laboratory equipment.

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The image illustrates a laboratory setup comprising a 50 ml graduated glass cylinder filled with 5 ml water and 1 g Zinc, over which 5 ml hydrochloric acid is poured via a thistle funnel secured with a cork where the funnel's end is submerged below the tap water level; a glass pipe connects the reaction apparatus to a water-filled test tube inside a glass dish holding sufficient water, facilitating the collection of pure hydrogen gas.

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The process diagram shows a chain of main steps required to produce hydrogen.

Overall, the operation of creating hydrogen gas needs several essential stages starting with 50 ml of water and 1gm of Zinc and ends with pure hydrogen gas. thistle funnel has to be under the tap water and also a sufficient water is needed in the process.

To begin with, a quantity of 5 ml of water and 1gm of Zinc must be filled inside a 50ml graduated glass cylinder, it is followed by pouring 5ml of hydrochloric acid into the mixture with thistle funnel which must to be located below the tap water,then with a pipe gas we add the produced gas to another glass dish which is already filled with sufficient water , after that a tube test will be inserted in order to separate the new mixture , by mounting some of the water inside the tube and release the pure hydrogen gas in the least part of the tube.

Word Count: 165

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Overall Band Score

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Vocabulary Complexity:
C2 - Complex
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Vocabulary Repetition:

water: 6

hydrogen: 3

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Task Response

The report adequately describes the process of hydrogen production using the laboratory equipment. The description is generally clear and covers the main stages of the process. To improve, focus on providing more precise details and ensuring accuracy in describing the quantities and steps involved. Also, enhance the structure by using more varied language and transitions to guide the reader through the process more smoothly.

Coherence & Cohesion

The report presents the information in a generally logical sequence, but the flow could be improved with more precise transitions and clearer connections between the steps. Paragraphing is present but could be used more effectively to group related ideas. Consider using cohesive devices more deliberately to guide the reader through the process.

Lexical Resource

The vocabulary is generally adequate for describing the process, but there are instances where more precise or sophisticated word choices could enhance the clarity and impact of the description. For example, consider using more specific terms related to laboratory equipment and processes. Varying your vocabulary can also help to avoid repetition.

Grammatical Range & Accuracy

The report contains a number of grammatical errors and phrasing issues that affect clarity. While the overall meaning is understandable, the frequency of errors distracts the reader. Focus on improving sentence structure, subject-verb agreement, and correct use of articles and prepositions. Proofreading carefully is essential.

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