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COSHH Awareness Prep

Control of hazardous substances assessment questions.

Pass mark 18/25 30 minutes HSE-aligned How many can I get wrong?
Sit a full mock under the clock at least once. Nerves are half the battle.
Free practice questions
Try 3 real COSHH Awareness Prep questions
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Q1. What does COSHH stand for?
  • A.  Control of Substances Hazardous to Health
  • B.  Code of Safety for Hazardous Handling
  • C.  Control of Site Hazards and Health
  • D.  Classification of Substances Harmful to Humans
Show answer & explanation
✓ Answer: A. Control of Substances Hazardous to Health
COSHH is the Control of Substances Hazardous to Health Regulations 2002 (as amended). It is the main UK law regulating exposure to hazardous substances at work. The other options are invented phrases that do not correspond to any real regulation.
Q2. Why is skin absorption a particularly deceptive route of entry?
  • A.  It only affects the skin surface and never causes internal harm
  • B.  Some substances can pass through intact, undamaged skin into the bloodstream without any visible warning signs at the point of contact
  • C.  It always causes an immediate visible burn, so it is easy to detect
  • D.  Skin absorption cannot occur unless the skin already has a cut or abrasion
Show answer & explanation
✓ Answer: B. Some substances can pass through intact, undamaged skin into the bloodstream without any visible warning signs at the point of contact
Certain chemicals, such as some organic solvents, pesticides and phenols, can penetrate intact skin and enter the bloodstream with little or no immediate local sign of contact, meaning exposure can go unnoticed until systemic symptoms appear. This is why it is deceptive compared with routes that cause immediate visible reactions.
Q3. Which of these is NOT one of the nine standard GHS hazard pictograms used on UK COSHH labels?
  • A.  Gas cylinder
  • B.  Corrosive
  • C.  Yellow radiation trefoil
  • D.  Environmental hazard (fish and tree)
Show answer & explanation
✓ Answer: C. Yellow radiation trefoil
The radiation trefoil (yellow/black) is a separate ionising radiation warning symbol used under different regulations, not one of the nine GHS pictograms. The GHS set covers physical, health and environmental chemical hazards only.
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Ten questions to see where you stand
Two minutes, no timer, marked the moment you finish with every answer explained. Then you'll know which topics need the work before you sit a full mock.
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Topic drills
Ten quick questions on one topic, marked instantly with explanations.
1 free drill left — then a free account unlocks 3 + a full mock.
What COSHH covers · 36
Hazardous substances & routes of entry · 38
Hazard symbols & safety data sheets · 36
Risk assessment & control hierarchy · 38
PPE, RPE & exposure limits · 37
Storage, spills & emergencies · 38
COSHH Awareness Prep — common questions
Frequently asked
How many questions are in the COSHH Awareness Prep?
The exam has 25 questions. Every Revision Robin mock uses the same 25-question format so your practice matches the real thing.
What is the pass mark for the COSHH Awareness Prep?
You need 18 out of 25 correct to pass, which is about 72%. Our mocks mark you against this exact threshold.
How long do you get?
The test is timed at 30 minutes. Our full mock runs on the same clock so you can practise your pacing.
Are these the real exam questions?
No. Our questions are original and written to match the current syllabus, so they give realistic practice without copying the official paper. Every answer comes with a plain-English explanation. Always confirm current rules and content with HSE-aligned.