Question detail
Select a suitable material for making a water pipe and justify your choice based on its properties.
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 materials
Question
Select a suitable material for making a water pipe and justify your choice based on its properties.
Answer
A suitable material for making a water pipe is PVC (polyvinyl chloride) because it is resistant to corrosion, lightweight, and has good durability. These properties ensure that the pipe can withstand water pressure and resist degradation over time.
Explanation
This question assesses the ability to select materials based on their properties and justify the choice, which is a key aspect of the learning objective.
Common mistake
Misinterpreting density as the sole factor for material selection
Students often think that a material’s density alone determines its suitability for a particular use, ignoring other properties such as strength, thermal conductivity or corrosion resistance.
Explain that while density is important, other properties like mechanical strength, hardness, thermal expansion, electrical conductivity and resistance to corrosion must also be considered when matching a material to a specific application. Use examples such as aluminium alloys being chosen for aircraft parts because of their low density combined with adequate strength, not just because they are light.
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