Chemistry 0620 · IGCSE · Corrosion of metals

Corrosion of metals — practice question

Steel bridges are coated with paint to reduce the chance of rust developing on their surfaces. What makes steel rust?

  • Awater, oxygen and sunlight
  • Bwater and oxygen only
  • Cwater and sunlight only
  • Doxygen and sunlight only

Worked solution & mark scheme

This 1-mark question has a full step-by-step worked solution and mark scheme.

  • Full mark scheme, point by point
  • Step-by-step worked solution
  • Write your answer & get it marked instantly by AI