Multiple choice

Which of the following pairs of ‘alloy - constituent metals’ is not correctly matched?

  1. Naval brass - Cu, Zn, Sn

  2. Dow’s metal - Mg, Al, Mn

  3. Guilding metal - Cu, Zn

  4. Cartridge brass - Cu, Zn

  5. Megallium - Fe, Ni, Cr
Reveal answer Fill a bubble to check yourself
E Correct answer
Explanation

Megallium is composed of 60% cobalt, 20% chromium, 5% molybdenum and traces of other substances. Elinvar consists of 59% iron, 36% nickel, and 5% chromium.

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