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Cambridge IGCSE Chemistry practice

What is the primary cause of rusting in iron?

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Show answerCorrosion of metals revisionRevise the key idea

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MCQ

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cambridge_mcq

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Topic

Corrosion of metals

Exam-style question

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What is the primary cause of rusting in iron?.

  1. A.Exposure to sunlight
  2. B.Contact with water and oxygen
  3. C.High temperatures
  4. D.Presence of carbon dioxide

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Paper 3 structured question: Corrosion of metals

Paper 3Theory (Core)1 marks

Description

Rusting of Iron

Iron and steel are often used in construction and manufacturing. When exposed to moisture and air, they can rust, leading to structural weaknesses.

  1. a

    State the two conditions necessary for rusting to occur.

    Aim for approximately 1 distinct marking point.

    [1]