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CXC · CSEC · Physics

Physical Quantities and Units
Practice Questions

20 CXC CSEC Physics questions on Physical Quantities and Units, each with instant feedback and a full examiner-style mark scheme.

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Try 2 sample questions on Physical Quantities and Units

Question 1 · 1 mark · Difficulty 1/3

A technician at a bauxite processing plant in Jamaica measures the mass of aluminium ore samples using a digital balance. Which of the following is the SI base unit for mass?

  1. gram
  2. kilogram
  3. newton
  4. tonne
Show answer & explanation
✓ Answer: Bkilogram
Award 1 mark for identifying kilogram as the SI base unit for mass. A is incorrect — gram is a derived unit (1/1000 of a kilogram). C is incorrect — newton is the SI unit for force, not mass. D is incorrect — tonne is a non-SI unit of mass.
Question 2 · 1 mark · Difficulty 2/3

The density of a sample of bauxite ore from Guyana is measured as 2700 kg/m³. Which of the following correctly expresses density in SI base units?

  1. kg m⁻³
  2. g cm⁻³
  3. kg/m³
  4. Both A and C
Show answer & explanation
✓ Answer: DBoth A and C
Award 1 mark for recognizing that both kg m⁻³ and kg/m³ are correct expressions of density in SI base units (kilogram and metre). B is incorrect — g cm⁻³ uses non-SI unit gram and centimetre. The notation kg m⁻³ and kg/m³ are equivalent representations.
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CXC CSEC Physics: Physical Quantities and Units FAQ

How many CXC CSEC Physics questions on Physical Quantities and Units are there on Kramizo?
Kramizo currently has 20 exam-board-aligned practice questions on Physical Quantities and Units for CXC CSEC Physics, 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 Physics?
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 Physical Quantities and Units practice with other Physics 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 Physical Quantities and Units questions aligned to the official CXC CSEC Physics syllabus?
Every question is written against the published CXC CSEC Physics 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 Physical Quantities and Units typically tested on CXC CSEC Physics papers?
Physical Quantities and Units appears across multiple question types on real CXC CSEC Physics 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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