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One of the advantages of aluminium compared to steel is ______

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One of the advantages of aluminium compared to steel is ______

(a) lower production cost

(b) higher-strength

(c) higher weight

(d) low corrosion

I have been asked this question in examination.

My enquiry is from Applications and Advantages of Aluminium topic in section Wrought Aluminium Alloys of Aerospace Materials & Processes

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The correct option is (d) low corrosion

Best explanation: Aluminium creates a natural layer around itself that protects it from corrosion. Steel has a higher strength and weight when compared to aluminium. Aluminium also has a higher production and manufacturing cost.

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