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BECE Career Technology 2025 Paper
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© africaexams.com
Question : 29
Total: 40
Smart materials respond to changes in temperature by altering their properties. Thermochromic materials change colour when exposed to
dust.
heat.
light.
moisture.
Validate
Solution:
Concept:
Thermochromic materials change colour in response to temperature.
Explanation:
Thermochromic materials are a type of smart material that alter their colour when their temperature changes.
This means they respond to heat.
Answer:
B. heat.
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