Multiple choice

Which of the following sets does not have any alloy of aluminium?

  1. Duralium, magnalium, alnico

  2. Constantan, magnalium, rose metal

  3. Mischmetal, rose metal, constantan

  4. Mischmetal, rose metal, alnico

  5. Rose metal, constantan, duralium
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Mischmetal is an alloy of rare earth elements in various naturally occurring proportions. Rose's metal consists of 50% bismuth, 25–28% lead and 22–25% tin. Constantan is a copper-nickel alloy usually consisting of 55% copper and 45% nickel.

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