Chemistry 0620 · IGCSE · Corrosion of metals

Corrosion of metals — practice question

Several ways of stopping iron from rusting are given. 1 alloying with chromium. 2 greasing. 3 painting. Which of these are barrier methods?

  • A1 and 2
  • B1 and 3
  • C2 and 3
  • D3 only

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