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HomeCXC CSEC Integrated SciencePollution: Types, Sources, Effects and Control
CXC · CSEC · Integrated Science

Pollution: Types, Sources, Effects and Control
Practice Questions

20 CXC CSEC Integrated Science questions on Pollution: Types, Sources, Effects and Control, each with instant feedback and a full examiner-style mark scheme.

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✨ Revision guide includes key terms, worked examples and exam technique for Pollution: Types, Sources, Effects and Control.

Try 2 sample questions on Pollution: Types, Sources, Effects and Control

Question 1 · 1 mark · Difficulty 1/3

Which of the following gases is responsible for the destruction of the ozone layer?

  1. Carbon dioxide
  2. Sulphur dioxide
  3. Chlorofluorocarbons (CFCs)
  4. Methane
Show answer & explanation
✓ Answer: CChlorofluorocarbons (CFCs)
Award 1 mark for identifying CFCs as ozone-depleting substances. A is incorrect — CO₂ is a greenhouse gas but does not destroy ozone. B is incorrect — SO₂ causes acid rain but does not deplete ozone. D is incorrect — methane is a greenhouse gas but does not significantly affect the ozone layer.
Question 2 · 1 mark · Difficulty 2/3

A sugar cane factory in Trinidad discharges untreated wastewater containing organic matter into a nearby river. Which of the following is the MOST likely immediate effect on the river ecosystem?

  1. Increase in dissolved oxygen levels
  2. Decrease in dissolved oxygen levels
  3. Increase in fish population
  4. Decrease in water temperature
Show answer & explanation
✓ Answer: BDecrease in dissolved oxygen levels
Award 1 mark for identifying that organic matter decomposition by bacteria uses up oxygen (biochemical oxygen demand). A is incorrect — oxygen levels decrease, not increase, as bacteria decompose organic waste. C is incorrect — fish populations would decline due to oxygen depletion. D is incorrect — decomposition is an exothermic process that may slightly increase temperature.
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CXC CSEC Integrated Science: Pollution: Types, Sources, Effects and Control FAQ

How many CXC CSEC Integrated Science questions on Pollution: Types, Sources, Effects and Control are there on Kramizo?
Kramizo currently has 20 exam-board-aligned practice questions on Pollution: Types, Sources, Effects and Control for CXC CSEC Integrated Science, 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 Integrated Science?
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 Pollution: Types, Sources, Effects and Control practice with other Integrated Science 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 Pollution: Types, Sources, Effects and Control questions aligned to the official CXC CSEC Integrated Science syllabus?
Every question is written against the published CXC CSEC Integrated Science 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 Pollution: Types, Sources, Effects and Control typically tested on CXC CSEC Integrated Science papers?
Pollution: Types, Sources, Effects and Control appears across multiple question types on real CXC CSEC Integrated Science 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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