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CIE · IGCSE · Chemistry

Electrical conductivity and electrolysis principles
Practice Questions

20 CIE IGCSE Chemistry questions on Electrical conductivity and electrolysis principles, each with instant feedback and a full examiner-style mark scheme.

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Try 2 sample questions on Electrical conductivity and electrolysis principles

Question 1 · 1 mark · Difficulty 1/3

Which statement best explains why solid sodium chloride does not conduct electricity?

  1. The ions are not free to move
  2. Sodium chloride is covalent
  3. The ions are too small
  4. Sodium chloride contains no electrons
Show answer & explanation
✓ Answer: AThe ions are not free to move
Award 1 mark for recognising that ions must be free to move to conduct electricity. B is incorrect — sodium chloride is ionic, not covalent. C is incorrect — ion size does not prevent conductivity if ions can move. D is incorrect — all matter contains electrons; the key is mobile charge carriers.
Question 2 · 1 mark · Difficulty 2/3

An industrial plant electrolyses concentrated aqueous sodium chloride using inert electrodes. The solution contains Na⁺, Cl⁻, H⁺ and OH⁻ ions. Which ion is discharged at the cathode?

  1. H⁺
  2. Na⁺
  3. Cl⁻
  4. OH⁻
Show answer & explanation
✓ Answer: AH⁺
Award 1 mark for H⁺. Hydrogen ions are preferentially discharged over sodium ions at the cathode because hydrogen is less reactive than sodium. B is incorrect — Na⁺ remains in solution. C and D are incorrect — negative ions move to the anode, not cathode.
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CIE IGCSE Chemistry: Electrical conductivity and electrolysis principles FAQ

How many CIE IGCSE Chemistry questions on Electrical conductivity and electrolysis principles are there on Kramizo?
Kramizo currently has 20 exam-board-aligned practice questions on Electrical conductivity and electrolysis principles 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 Electrical conductivity and electrolysis principles 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 Electrical conductivity and electrolysis principles 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 Electrical conductivity and electrolysis principles typically tested on CIE IGCSE Chemistry papers?
Electrical conductivity and electrolysis principles 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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