Question 1
Question detail
Why is it important for potable water to have low levels of dissolved salts and microbes?
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
Question
Type
exam_style
Style
Topic
Using the Earth's resources and obtaining potable water
Question
Why is it important for potable water to have low levels of dissolved salts and microbes?
Answer
Potable water should have low levels of dissolved salts to prevent health issues related to high salinity, and low levels of microbes to reduce the risk of waterborne diseases.
Explanation
A strong answer should directly address the approved learning objective to define potable water as water that is safe to drink. This question belongs to Potable water within Using the Earth's resources and obtaining potable water, so the response should use that exact curriculum context rather than a generic statement. The answer is correct when it names the key idea, explains the link to potable water, and keeps the wording specific to AQA GCSE revision.
Common mistake
Misunderstanding Potable Water
Students often confuse potable water with chemically pure water, thinking they are the same.
Remember that potable water is safe to drink but may contain dissolved substances, while chemically pure water is only H2O without any impurities.
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