Question detail
How does the composition of brass affect its properties compared to pure copper?
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
MCQ
Type
practice
Style
Topic
Using materials
Question
- A. Brass is more malleable than pure copper.
- B. Brass is less conductive than pure copper.
- C. Brass is harder and more durable than pure copper.
- D. Brass is lighter than pure copper.
Answer
The correct option is Brass is harder and more durable than pure copper.. This answer is correct because it matches the approved learning objective to recall brass as an alloy of copper and zinc. (Chemistry only) in the subtopic Alloys as useful materials.
Explanation
The correct option is Brass is harder and more durable than pure copper.. Brass is harder and more durable than pure copper. is correct because it directly supports the approved learning objective to recall brass as an alloy of copper and zinc. (Chemistry only). This belongs to the subtopic Alloys as useful materials within Using materials, 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 Alloys as useful materials.
Common mistake
Common Misunderstanding of Brass Composition
Students often confuse brass with bronze, thinking that brass is made from copper and tin.
Remember that brass is specifically an alloy of copper and zinc, while bronze is an alloy of copper and tin.
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