Question detail
What is the primary reason for treating industrial waste 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 recycle water for industrial use.
- B. To remove all organic matter completely.
- C. To ensure it meets environmental regulations.
- D. To increase the temperature of the water.
Answer
The correct option is To ensure it meets environmental regulations.. This answer is correct because it matches the approved learning objective to explain that industrial waste water may contain organic matter and harmful chemicals in the subtopic Waste water treatment.
Explanation
The correct option is To ensure it meets environmental regulations.. To ensure it meets environmental regulations. is correct because it directly supports the approved learning objective to explain that industrial waste water may contain organic matter and harmful chemicals. This belongs to the subtopic Waste water treatment 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 Waste water treatment.
Common mistake
Confusing Organic Matter with Harmful Chemicals
Students often think that all organic matter in industrial waste water is harmful, overlooking that some organic matter can be benign or even beneficial.
Clarify that while industrial waste water may contain harmful chemicals, not all organic matter is harmful; some can be naturally occurring and non-toxic.
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