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HomeCIE IGCSE ChemistryRusting and its prevention
CIE · IGCSE · Chemistry

Rusting and its prevention
Practice Questions

20 CIE IGCSE Chemistry questions on Rusting and its prevention, each with instant feedback and a full examiner-style mark scheme.

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Try 2 sample questions on Rusting and its prevention

Question 1 · 1 mark · Difficulty 1/3

What are the two substances that must be present for iron to rust?

  1. oxygen and water
  2. oxygen and carbon dioxide
  3. water and salt
  4. nitrogen and water
Show answer & explanation
✓ Answer: Aoxygen and water
Award 1 mark for identifying both oxygen and water as essential for rusting. B is incorrect — carbon dioxide is not required for rusting. C is incorrect — salt accelerates rusting but is not essential. D is incorrect — nitrogen does not participate in the rusting reaction.
Question 2 · 1 mark · Difficulty 1/3

Which formula represents hydrated iron(III) oxide, commonly known as rust?

  1. FeO
  2. Fe₂O₃·xH₂O
  3. Fe(OH)₂
  4. FeCO₃
Show answer & explanation
✓ Answer: BFe₂O₃·xH₂O
Award 1 mark for the correct formula of rust. A is incorrect — FeO is iron(II) oxide. C is incorrect — Fe(OH)₂ is iron(II) hydroxide, an intermediate in rusting. D is incorrect — FeCO₃ is iron(II) carbonate.
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20 questions · 25 min · free

CIE IGCSE Chemistry: Rusting and its prevention FAQ

How many CIE IGCSE Chemistry questions on Rusting and its prevention are there on Kramizo?
Kramizo currently has 20 exam-board-aligned practice questions on Rusting and its prevention for CIE IGCSE Chemistry, with new questions added every week. Each question gives you instant feedback and a full examiner-style mark scheme that tells you exactly what would earn marks on a real CIE paper. The questions span the full difficulty range — from straightforward recall (level 1) right up to multi-step reasoning and evaluation (level 3) — so the bank works for first-pass revision and final exam-week stress testing alike.
Is Kramizo free for CIE IGCSE students preparing for Chemistry?
Yes — completely free. Every student gets 45 questions a day on the free plan, with no card required and no trial countdown. That free quota works across every subject and every topic in our bank, so you can mix Rusting and its prevention practice with other Chemistry topics or even switch to a totally different CIE subject without paying anything. Kramizo's optional Pro plan removes the daily cap and adds detailed progress analytics, but the free tier is the real product — used by thousands of GCSE, IGCSE and CSEC students.
Are the Rusting and its prevention questions aligned to the official CIE IGCSE Chemistry syllabus?
Every question is written against the published CIE IGCSE Chemistry specification, including the exact command words (state, describe, explain, calculate, evaluate, etc.), mark allocations, and difficulty tier you'd see on a real CIE paper. Explanations are written in the style of official examiner mark schemes — they tell you what is being awarded marks and why distractors are wrong, not just whether you got it right. The bank is continually refined to match the latest syllabus updates from CIE.
How is Rusting and its prevention typically tested on CIE IGCSE Chemistry papers?
Rusting and its prevention appears across multiple question types on real CIE IGCSE Chemistry papers — most commonly as multiple-choice questions in the objective section, structured short-answer questions in the main paper, and occasionally as part of an extended response. Kramizo's practice bank reflects that mix: 4-option MCQs, true/false statements, fill-in-the-blank key terms, multi-select questions, and ordering questions. Working through the bank gives you exposure to every question style examiners actually use.

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