Question detail
What is a common characteristic of 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. It contains only organic matter.
- B. It is always safe to release into the environment.
- C. It may contain organic matter and harmful chemicals.
- D. It is produced only from urban lifestyles.
Answer
The correct option is It may contain organic matter and harmful chemicals.. 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 It may contain organic matter and harmful chemicals.. It may contain organic matter and harmful chemicals. 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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