Question 1
Question detail
What is the primary purpose of sterilisation in the treatment of potable water?
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
MCQ
Type
practice
Style
Topic
Using the Earth's resources and obtaining potable water
Question
- A. To remove dissolved salts
- B. To kill harmful microbes
- C. To improve taste
- D. To enhance color
Answer
The correct option is To kill harmful microbes. This answer is correct because it matches the approved learning objective to define potable water as water that is safe to drink in the subtopic Potable water.
Explanation
The correct option is To kill harmful microbes. To kill harmful microbes is correct because it directly supports the approved learning objective to define potable water as water that is safe to drink. This belongs to the subtopic Potable water within Using the Earth's resources and obtaining potable water, so the explanation must stay tied to that curriculum context. The other options are incorrect because they either do not answer this learning objective, use a vague statement, or move away from Potable water.
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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