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HomeCXC CSEC Integrated ScienceRadioactivity: Types of Radiation, Half-life and Uses
CXC · CSEC · Integrated Science

Radioactivity: Types of Radiation, Half-life and Uses
Practice Questions

20 CXC CSEC Integrated Science questions on Radioactivity: Types of Radiation, Half-life and Uses, 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 Radioactivity: Types of Radiation, Half-life and Uses.

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Question 1 · 1 mark · Difficulty 1/3

A scientist at the University of the West Indies is investigating different types of radiation. She places a thin sheet of paper between a radioactive source and a detector. The count rate drops significantly. Which type of radiation is the source most likely emitting?

  1. Alpha particles
  2. Beta particles
  3. Gamma rays
  4. X-rays
Show answer & explanation
✓ Answer: AAlpha particles
Award 1 mark for identifying alpha particles as the radiation stopped by paper. B is incorrect — beta particles require aluminium (a few mm) to be stopped. C is incorrect — gamma rays require thick lead or concrete to be absorbed. D is incorrect — X-rays also penetrate paper easily.
Question 2 · 1 mark · Difficulty 1/3

Which of the following correctly describes the composition of an alpha particle?

  1. 2 protons and 2 neutrons
  2. 1 proton and 1 electron
  3. 2 protons and 2 electrons
  4. 1 neutron only
Show answer & explanation
✓ Answer: A2 protons and 2 neutrons
Award 1 mark for correct identification. An alpha particle is identical to a helium-4 nucleus. B is incorrect — this does not describe any radiation type. C is incorrect — alpha particles contain no electrons. D is incorrect — a single neutron is not an alpha particle.
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CXC CSEC Integrated Science: Radioactivity: Types of Radiation, Half-life and Uses FAQ

How many CXC CSEC Integrated Science questions on Radioactivity: Types of Radiation, Half-life and Uses are there on Kramizo?
Kramizo currently has 20 exam-board-aligned practice questions on Radioactivity: Types of Radiation, Half-life and Uses 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 Radioactivity: Types of Radiation, Half-life and Uses 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 Radioactivity: Types of Radiation, Half-life and Uses 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 Radioactivity: Types of Radiation, Half-life and Uses typically tested on CXC CSEC Integrated Science papers?
Radioactivity: Types of Radiation, Half-life and Uses 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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