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HomeCIE IGCSE Co-ordinated Science (Double Award)Organic and Environmental Chemistry
CIE · IGCSE · Co-ordinated Science (Double Award)

Organic and Environmental Chemistry
Practice Questions

40 CIE IGCSE Co-ordinated Science (Double Award) questions on Organic and Environmental Chemistry, each with instant feedback and a full examiner-style mark scheme.

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Try 2 sample questions on Organic and Environmental Chemistry

Question 1 · 1 mark · Difficulty 1/3

Which property of hydrocarbons in crude oil increases as the length of the carbon chain increases?

  1. Ease of flow through pipelines
  2. Flammability of the fraction
  3. Volatility of the fraction
  4. Boiling point of the fraction
Show answer & explanation
✓ Answer: DBoiling point of the fraction
As carbon chain length increases, intermolecular forces become stronger, so more energy is needed to separate the molecules, raising the boiling point. Flammability decreases with chain length, not increases. Longer chains are more viscous and flow less easily. Volatility decreases as boiling point rises.
Question 2 · 1 mark · Difficulty 1/3

In fractional distillation of crude oil, where does crude oil vapour first enter the fractionating column?

  1. At the middle of the column
  2. At the bottom of the column
  3. At the top of the column
  4. Through a condenser at the side
Show answer & explanation
✓ Answer: BAt the bottom of the column
Crude oil is heated and vaporised before entering the fractionating column at the bottom. The temperature gradient decreases from bottom to top, allowing different fractions to condense at different heights. Crude oil does not enter at the top or middle. Condensers are used to cool the fractions after they leave the column, not as entry points.
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CIE IGCSE Co-ordinated Science (Double Award): Organic and Environmental Chemistry FAQ

How many CIE IGCSE Co-ordinated Science (Double Award) questions on Organic and Environmental Chemistry are there on Kramizo?
Kramizo currently has 40 exam-board-aligned practice questions on Organic and Environmental Chemistry for CIE IGCSE Co-ordinated Science (Double Award), 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 Co-ordinated Science (Double Award)?
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 Organic and Environmental Chemistry practice with other Co-ordinated Science (Double Award) 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 Organic and Environmental Chemistry questions aligned to the official CIE IGCSE Co-ordinated Science (Double Award) syllabus?
Every question is written against the published CIE IGCSE Co-ordinated Science (Double Award) 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 Organic and Environmental Chemistry typically tested on CIE IGCSE Co-ordinated Science (Double Award) papers?
Organic and Environmental Chemistry appears across multiple question types on real CIE IGCSE Co-ordinated Science (Double Award) 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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