Describe any three properties of aluminium that make it a preferred metal in modern industries.
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Model Answer
Three properties of aluminium that make it a preferred metal in modern industries:
- Light weight – It is light, making it ideal for manufacturing aircraft and other vehicles where weight reduction is essential.
- Resistant to corrosion – It does not rust or corrode easily, increasing the durability of products like utensils and wires.
- Good conductor of heat and malleable – It conducts heat well and can be shaped easily, making it useful in electrical wires and cookware.
Due to these properties, it serves as a substitute for steel, copper, zinc and lead in many industries.
Source: Aluminium Smelting, Chapter 6
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Explanation
- The question asks for three properties, so list exactly three — each worth 1 mark.
- Pick properties directly from the textbook passage: light, corrosion-resistant, good conductor of heat, malleable, becomes strong when mixed with other metals.
- Briefly link each property to a use/application — examiners expect this to show understanding, not just rote listing.
- Avoid copying all properties in a single line without explanation; separate them clearly for full marks.