If you are preparing for the CITB Health, Safety and Environment test, working through a full set of 50 questions in one sitting is one of the most useful things you can do. It shows you where your knowledge is solid, where it is shaky, and how it feels to keep concentrating for the length of a real test.
This post walks through the themes covered by a full 50-question practice set drawn from the CITB question bank for the Operatives and Specialists test. Rather than simply listing answers, we have grouped the questions by topic and explained the reasoning behind them — because the real test will phrase things differently, and understanding beats memorising every time.
“The actual test will take 45 minutes and the aim is to answer at least 45 out of the 50 questions correctly.”
That is a 90 per cent pass mark. It is a demanding standard, and it is exactly why casual revision does not cut it.
Which Card Does This Test Apply To?
The Operatives and Specialists HS&E test sits behind most CSCS cards on site:
- Green Labourer card — Operatives test
- Red Trained Operative card — Operatives test
- Blue Skilled Worker card — Operatives test
- Specialist trades (scaffolding, demolition, tunnelling, plant) — Specialists test
- Gold Supervisor and black Manager/Principal Contractor cards — Managers and Professionals test
If you are unsure which card route applies to you, our guide to CSCS card types explained sets out the requirements for each colour.
Law and Documentation
A solid handful of the 50 questions test whether you recognise the key legal duties. These come up in almost every version of the test:
- Written health and safety policy — an employer must prepare one in writing once they employ five people or more. Not three, not ten. Five.
- CDM notification — apart from work for domestic clients, a project must be notified to the HSE where the work will last more than 30 days or more than 500 person days.
- Construction phase health and safety plan — on a notifiable project under CDM, this must be in place before construction work begins.
- The health and safety file — its purpose is to assist people who have to carry out work on the structure in the future. It is not an accident record and it is nothing to do with final accounts.
- Welfare facilities — the detail of what must be provided on site sits in the Construction (Design and Management) Regulations.
- Prohibition notice — if an HSE or local authority inspector issues one, the work subject to the notice must cease. No risk assessment, no extra precautions, no finishing the last bit. It stops.
Notice how many of these trace back to CDM. If you learn one piece of legislation properly for this test, make it CDM.
Risk Assessment and the Hierarchy of Control
The test consistently checks that you understand the difference between a hazard and a risk:
- A hazard is something with the potential to cause injury or damage. Hazards are identified precisely because of that potential.
- A risk is the likelihood or chance that a hazard could actually cause harm or damage.
Get those two definitions straight and several questions answer themselves.
The other principle running through the paper is the hierarchy of control. Two questions make the same point from different angles:
“In considering what measures to take to protect people against risks to their health and safety, personal protective equipment should always be regarded as … the last resort.”
And for working at height, the last resort in the hierarchy of control is the safety harness — not the MEWP, not the tower scaffold. Collective measures that protect everyone come before personal measures that protect one person.
The same logic drives the confined space question. Before anyone enters a confined space, the first consideration is not testing the atmosphere or checking access — it is whether there is an alternative method of doing the work that avoids entry altogether.
Permits and Method Statements
Two questions in the set (the paper repeats this one, which tells you how important CITB considers it) ask about permits to work. The purpose is simple: to establish a safe system of work. Not to check tools, not to speed the job up.
A hot work permit tells you when you can start and stop, how to stop sparks or heat travelling, and what fire extinguisher or fire watch you need. It does not tell you where the local fire station is. If your job needs one, you should expect to keep an extinguisher close to the work and to check for signs of fire when you stop.
On method statements, the best way for a supervisor to be sure operatives have understood one is to explain it to them and test their understanding. Filing it, displaying it on a notice board, or having people sign to say they read it proves nothing.
A method statement for working at height should cover the sequence of operations and equipment, how falls are to be prevented, and who will supervise the job on site.
COSHH and Hazardous Substances
This is the largest single block of questions in the set, and it is where most people lose marks.
- A COSHH assessment tells you how a substance might harm you and how to protect yourself when using it. The safest way to use a hazardous substance is to understand that assessment and follow the instructions — not to ask a colleague who has used it before.
- Your supervisor or employer is the person who should explain the health risks, the safe method of work and the COSHH assessment before you start.
- Where exposure cannot reasonably practicably be prevented, the first thing to consider is how to minimise risk and control exposure — before training, health surveillance or monitoring.
- Corrosive labelling means you need to find out what protection you need, because the substance can damage your skin on contact. Explosive labelling means finding out how to use it safely because it can explode.
- The long-term health hazard symbol means the substance can cause serious long-term health problems.
Long-Term Health: The Questions People Underestimate
Construction’s biggest killer is not falling objects.
“What is the biggest cause of long-term health issues in the construction industry? … Breathing in hazardous substances.”
The set drills into this repeatedly:
- Asbestos can be found in any building built or refurbished before the year 2000 — not just houses, not just a narrow date range. Breathing asbestos dust causes lung diseases.
- Occupational asthma is caused by breathing in hazardous dust, fumes or vapours, and it can stop you ever working with certain substances again.
- Silica dust and bird droppings can both lead to lung disease. Strong smells, on their own, do not.
- When drilling, cutting, sanding or grinding, the best protection is the full package: dust extraction or wet cutting, an FFP3-rated mask, hearing protection and impact goggles. A disposable mask alone is not enough.
- Solvents in some paints and resins can cause headaches, dizziness and sickness, lung problems, and effects on other parts of the body — all of these.
- Vibration is serious because it can cause a disabling injury that cannot be cured.
- Leptospirosis (Weil’s disease) is carried mainly by rats, and you are more at risk working near wet ground, waterways or sewers.
Fire, Signs and Site Conditions
The remaining questions cover ground you should be able to pick up quickly:
- A CO2 extinguisher (black band) must not be used on metal and molten metal fires.
- Keeping your work area tidy and putting waste in the bins provided is the practical way to prevent a fire hazard.
- Yellow and black signs are warning signs alerting you to hazards or danger. Blue circles are mandatory, red circles with a bar are prohibition, green are safe condition.
- Frost around an LPG cylinder valve means the valve is leaking.
- Excessive oxygen in a confined space increases the flammability of combustible materials.
- The Beaufort scale matters when working at height externally because it measures wind speed.
- Trailing leads and cables should be run above head height over doorways and walkways, or kept close to the wall — never coiled tightly or left across a walkway.
- On PPE, you must store it correctly, report damage or loss and use it as instructed — but you must never be made to pay for damage or loss.
- Emergency service access is the first consideration when deciding the number and location of site access and egress points.
- A well-organised site keeps pedestrians and traffic apart with physical barriers.
- To operate plant on site you must be both trained and competent and authorised. Both, not either.
- Fluorescent light tubes are hazardous waste. Broken tiles, polythene and glass are not.
- The minimum first aid cover is an appointed person, whose job is to contact the emergency services and direct them to the scene — not to provide first aid treatment.
How to Use a 50-Question Set Properly
Working through a full set once and reading the answers is worth something. Working through it properly is worth far more:
- Sit it under timed conditions — 45 minutes, no phone, no notes.
- Mark it honestly and count anything you guessed as a fail, even if you got it right.
- Write down the topic of every question you got wrong, not the question itself.
- Go back to the source material for those topics rather than re-reading the answer.
- Retake a different 50 a few days later and see whether the same topics come up.
If you are scoring 45 or above consistently across different question sets — not the same one twice — you are ready to book. Our practical guide to passing the CSCS HS&E test covers booking, ID requirements and what to expect on the day.
How CSCS Mastery Fits Into This
A single set of 50 questions is a useful checkpoint, but it is not a revision plan. The CSCS Mastery app gives you over 2,000 practice questions covering every topic on both the operative and the managers and professionals versions of the HS&E test, including the COSHH, asbestos, confined space and hierarchy of control areas that account for most of the marks people lose.
Every question comes with a detailed explanation, so when you get one wrong you learn the principle behind it rather than just the correct letter. Full-length mock tests let you practise under the same 45-minute pressure as the real thing, and topic-by-topic practice lets you attack your weak areas directly.
Visit our exam prep section to start working through practice questions and mock tests today.
Revise on the go with CSCS Mastery
2,000+ practice questions, study guides, and detailed explanations — all in your pocket.
