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HomeCXC CSEC ChemistryIntroduction to Organic Chemistry: Homologous Series and Functional Groups
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Introduction to Organic Chemistry: Homologous Series and Functional Groups
Practice Questions

20 CXC CSEC Chemistry questions on Introduction to Organic Chemistry: Homologous Series and Functional Groups, each with instant feedback and a full examiner-style mark scheme.

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Try 2 sample questions on Introduction to Organic Chemistry: Homologous Series and Functional Groups

Question 1 · 1 mark · Difficulty 1/3

Which of the following is the correct general formula for the alkane homologous series?

  1. A. CₙH₂ₙ
  2. B. CₙH₂ₙ₊₂
  3. C. CₙH₂ₙ₋₂
  4. D. CₙH₂ₙ₊₁
Show answer & explanation
✓ Answer: BB. CₙH₂ₙ₊₂
Alkanes are saturated hydrocarbons with the general formula CₙH₂ₙ₊₂. CₙH₂ₙ is the formula for alkenes, and CₙH₂ₙ₋₂ is for alkynes. CₙH₂ₙ₊₁ represents an alkyl group, not a complete molecule.
Question 2 · 1 mark · Difficulty 1/3

Which of the following statements correctly describes a homologous series?

  1. A. Members have different functional groups but similar physical properties.
  2. B. Members have the same molecular formula but different structural formulae.
  3. C. Members share a general formula and show a gradual change in physical properties.
  4. D. Members contain only carbon and hydrogen atoms and are always gases.
Show answer & explanation
✓ Answer: CC. Members share a general formula and show a gradual change in physical properties.
A homologous series is a group of compounds that share the same general formula, the same functional group, and show a gradual change in physical properties with increasing chain length. Option A is incorrect because members share the same functional group, and Option D is incorrect because not all organic compounds are hydrocarbons or gases.
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CXC CSEC Chemistry: Introduction to Organic Chemistry: Homologous Series and Functional Groups FAQ

How many CXC CSEC Chemistry questions on Introduction to Organic Chemistry: Homologous Series and Functional Groups are there on Kramizo?
Kramizo currently has 20 exam-board-aligned practice questions on Introduction to Organic Chemistry: Homologous Series and Functional Groups for CXC CSEC 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 CXC 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 CXC CSEC 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 Introduction to Organic Chemistry: Homologous Series and Functional Groups practice with other Chemistry topics or even switch to a totally different CXC 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 Introduction to Organic Chemistry: Homologous Series and Functional Groups questions aligned to the official CXC CSEC Chemistry syllabus?
Every question is written against the published CXC CSEC Chemistry specification, including the exact command words (state, describe, explain, calculate, evaluate, etc.), mark allocations, and difficulty tier you'd see on a real CXC 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 CXC.
How is Introduction to Organic Chemistry: Homologous Series and Functional Groups typically tested on CXC CSEC Chemistry papers?
Introduction to Organic Chemistry: Homologous Series and Functional Groups appears across multiple question types on real CXC CSEC 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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