The alloy Duralumin is composed of _ of Al.
Correct answer: B. 90%
- A. 95%
- B. 90%
- C. 85%
- D. 80%
Explanation
Duralumin is an alloy made up of 90% aluminium, 4% copper, 0.51% magnesium, and less than 1% manganese.
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