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HomeCXC CSEC ChemistryTests and Identification of Organic Functional Groups
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Tests and Identification of Organic Functional Groups
Practice Questions

20 CXC CSEC Chemistry questions on Tests and Identification of Organic Functional Groups, each with instant feedback and a full examiner-style mark scheme.

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Try 2 sample questions on Tests and Identification of Organic Functional Groups

Question 1 · 1 mark · Difficulty 1/3

A student in a Barbados secondary school was given a sample of rum, which contains ethanol. Which reagent would produce a positive test confirming the presence of the hydroxyl group in ethanol?

  1. Acidified potassium dichromate solution
  2. Benedict's solution
  3. Bromine water
  4. Limewater
Show answer & explanation
✓ Answer: AAcidified potassium dichromate solution
Award 1 mark for A. Acidified potassium dichromate turns from orange to green when it oxidizes alcohols, confirming the presence of the hydroxyl group. B is incorrect — Benedict's solution tests for reducing sugars, not alcohols. C is incorrect — bromine water tests for unsaturated hydrocarbons (alkenes), not alcohols. D is incorrect — limewater tests for carbon dioxide.
Question 2 · 1 mark · Difficulty 1/3

Which colour change is observed when a primary alcohol is oxidized by acidified potassium dichromate solution?

  1. Blue to colourless
  2. Orange to green
  3. Purple to colourless
  4. Colourless to brick-red
Show answer & explanation
✓ Answer: BOrange to green
Award 1 mark for B. Acidified potassium dichromate (K₂Cr₂O₇) is orange due to chromium(VI) ions. When it oxidizes alcohols, it is reduced to chromium(III) ions, which are green. A is incorrect — this is not the colour change for dichromate. C is incorrect — this describes acidified potassium permanganate being reduced. D is incorrect — this describes the result of Fehling's test.
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CXC CSEC Chemistry: Tests and Identification of Organic Functional Groups FAQ

How many CXC CSEC Chemistry questions on Tests and Identification of Organic Functional Groups are there on Kramizo?
Kramizo currently has 20 exam-board-aligned practice questions on Tests and Identification of Organic 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 Tests and Identification of Organic 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 Tests and Identification of Organic 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 Tests and Identification of Organic Functional Groups typically tested on CXC CSEC Chemistry papers?
Tests and Identification of Organic 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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