Unit 7: B3 Product in practice
Topic 7.1: Material selection Questions
Practice 20 exam-style questions for IB Design Technology Topic 7.1. Review the question stems below, then unlock the full Question Bank to access markschemes, model answers, and AI grading.
1Identify1 mark
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A stool seat does not break, but it flexes alarmingly under a heavy student. Which property is inadequate?
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How are essential properties used in material selection?
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A stool seat does not break, but it flexes alarmingly under a heavy student. Which property is inadequate?
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Unlock Question4Justify6 marks
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Justify the texture, form and colour chosen for a folding stool used in a school science lab, including the finishing techniques used.
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A material is stocked by one supplier only, with a six-week lead time and a 500 kg minimum order. What kind of problem is this?
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How are essential properties used in material selection?
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Unlock Question7Explain4 marks
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Explain why a cheaper material can be the more expensive choice over a stool's life.
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Why is the LIFE of a product part of a sustainability judgement?
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Explain why coated mild steel is a poor choice for the frame of a stool used in a science lab.
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Which is the most complete way to compare the cost of two materials for a product?
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Which of these is PRIMARY evidence for a material choice?
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Why must a supplier's data sheet be corroborated before it is relied on?
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What is the cost advantage of a moulded-in texture over a sprayed one?
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Unlock Question14Identify6 marks
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A folding stool for a school science lab needs a seat, a frame and feet. Identify an appropriate material for each, referring to the properties required.
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Which is a FUNCTIONAL reason for specifying a textured surface?
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Which requirement belongs to the CHEMICAL family of properties?
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Why is anodising preferred to painting for an aluminium frame in a wet laboratory?
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Explain why the colour of a lab stool is a functional decision as well as an aesthetic one.
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Unlock Question19Evaluate6 marks
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A school must buy 200 lab stools. Evaluate coated mild steel, virgin aluminium and recycled aluminium for the frame, using cost, availability and sustainability.
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Why should a corrosion test on candidate frame materials include deliberately scratched samples?
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