FREE PRACTICE TEST 24

CSCS Mock Test 24: 50 Questions

Practice the format people commonly call the “CSCS test”. The official assessment is the CITB Health, Safety & Environment Operatives test: 50 questions in 45 minutes with a 45/50 pass mark.

50 questions45 minutes45/50 targetInstant explanationsWork At Height And Access Safety

Important: This is an independent FastQual practice test, not an official CITB test or official CITB question bank. Use it alongside current official revision materials.

45:00

Answered 0/50

Question 1 of 50Occupational health

What can repeated skin contact with wet cement cause?

A. Dermatitis and chemical burnsB. Vibration white fingerC. Hearing lossD. Heat exhaustion only

Correct answer: A. Wet cement is highly alkaline and can cause irritant dermatitis and serious burns.

Question 2 of 50Occupational health

What is a major health risk from repeatedly breathing respirable crystalline silica dust?

A. Silicosis and other serious lung diseaseB. Hearing lossC. Sprained anklesD. Temporary eye strain only

Correct answer: A. Fine silica dust can penetrate deep into the lungs and cause serious, irreversible disease.

Question 3 of 50High risk activities

What should be considered before carrying out hot work such as welding or cutting?

A. Fire risk, combustible materials, permits and fire-watch arrangements where requiredB. Only the colour of the welding screenC. Whether the task is indoorsD. How quickly the job can be finished

Correct answer: A. Hot work can ignite nearby materials and often requires formal controls and fire precautions.

Question 4 of 50Working environment

What is a near miss?

A. A task completed without supervisionB. A late deliveryC. An event that caused a minor injury onlyD. An unplanned event that caused no harm but could have

Correct answer: D. Near misses should be reported because they reveal hazards before a more serious incident occurs.

Question 5 of 50Occupational health

Why should contaminated work clothing not be taken into clean eating areas?

A. It can spread hazardous dusts or substancesB. It makes the room warmerC. It is only a company image issueD. It damages mobile phones

Correct answer: A. Segregating contaminated clothing helps prevent secondary exposure by ingestion or transfer.

Question 6 of 50High risk activities

Why are overhead power lines dangerous to cranes and plant?

A. They make radios noisyB. They reduce fuel efficiencyC. They only interfere with GPSD. Electricity can arc or conduct through equipment even without direct contact

Correct answer: D. Overhead lines can cause fatal electric shock through contact or arcing, so safe clearances and controls are essential.

Question 7 of 50Occupational health

If a load is too heavy or awkward for you to handle safely, what should you do?

A. Get help or use suitable mechanical assistanceB. Throw it onto a trolleyC. Try to lift it once to test yourselfD. Drag it across an access route

Correct answer: A. Do not attempt a lift that exceeds your capability; use assistance or mechanical handling equipment.

Question 8 of 50Environmental & specialist awareness

Why should fuel containers be stored in a suitable designated area?

A. To make them easier to hideB. To keep them near drainsC. To reduce fire and pollution risk and allow spill containmentD. To warm the fuel

Correct answer: C. Suitable fuel storage helps prevent leaks, ignition and environmental contamination.

Question 9 of 50Occupational health

How can vibration exposure from power tools be reduced?

A. Use heavier gloves instead of managing exposureB. Remove tool guardsC. Use suitable low-vibration tools, maintain them and limit exposure timeD. Grip the tool as tightly as possible

Correct answer: C. Tool selection, maintenance and exposure management are key controls for vibration risk.

Question 10 of 50Working environment

What is a method statement mainly used for?

A. Recording holiday entitlementB. Setting out a safe sequence and method for carrying out workC. Listing employee salariesD. Ordering materials from suppliers

Correct answer: B. A method statement describes how a task will be carried out safely, often alongside a risk assessment.

Question 11 of 50High risk activities

Why is a hot-work permit used on some sites?

A. To confirm specified fire and safety precautions are in placeB. To record the welder's wagesC. To allow smoking in the work areaD. To replace fire extinguishers

Correct answer: A. A hot-work permit formalises checks and precautions for ignition-producing activities.

Question 12 of 50Environmental & specialist awareness

Why should spills be kept out of surface-water drains?

A. They may flow directly to watercourses and cause pollutionB. They only affect drinking water on siteC. They reduce concrete strengthD. They always block toilets

Correct answer: A. Many surface-water systems discharge to the environment, so pollutants must not enter them.

Question 13 of 50Working environment

Why should near misses be reported?

A. To reduce the number of breaksB. Only to increase paperworkC. They do not need reporting if nobody was injuredD. So lessons can be learned and controls improved before someone is hurt

Correct answer: D. Near-miss reporting helps identify weaknesses in controls and prevent recurrence.

Question 14 of 50High risk activities

What should happen before digging where underground services may be present?

A. Check service information, locate services with suitable equipment and use safe digging methodsB. Start with a mechanical excavatorC. Pour water on the areaD. Rely on memory of old plans

Correct answer: A. Planning, service plans, locating devices and safe digging practices help prevent striking buried services.

Question 15 of 50Environmental & specialist awareness

What is the purpose of a spill kit?

A. To contain and absorb certain spills so they can be handled safelyB. To repair electrical toolsC. To clean PPE onlyD. To test concrete strength

Correct answer: A. Spill kits provide materials for containment, absorption and controlled clean-up.

Question 16 of 50Working environment

What is the best way to help prevent slips and trips in your work area?

A. Only clean areas that visitors can seeB. Keep routes clear and deal with spills, cables and waste promptlyC. Leave waste until the end of the weekD. Walk more quickly through congested areas

Correct answer: B. Good housekeeping, cable management and prompt clean-up reduce slip and trip risks.

Question 17 of 50Safety

Why should water not be used on live electrical equipment?

A. It makes alarms louderB. It can conduct electricity and increase shock riskC. It creates asbestosD. It always damages concrete

Correct answer: B. Water can conduct electricity; power should be isolated and a suitable extinguisher used where appropriate.

Question 18 of 50Occupational health

What should you do before using a hazardous substance you have not used before?

A. Use it outdoors without further checksB. Smell it to identify the hazardC. Mix it with waterD. Check the assessment, label/SDS and required controls

Correct answer: D. You should understand the hazards, exposure routes and controls before use.

Question 19 of 50Safety

If a tool starts behaving unusually, what should you do?

A. Remove the safety guardB. Increase the speedC. Stop using it and report/check the defectD. Hit it to make it work normally

Correct answer: C. Unusual noise, vibration or operation can indicate a dangerous defect.

Question 20 of 50Working environment

What does a red circular sign with a diagonal bar generally mean?

A. A safe escape routeB. A mandatory actionC. A prohibition or something you must not doD. First-aid equipment

Correct answer: C. Red prohibition signs communicate actions that are not allowed.

Question 21 of 50Safety

When is it appropriate to try to use a fire extinguisher?

A. Only if you are trained, it is safe and you have a clear escape routeB. Whenever any fire is visibleC. If you can stand between the fire and the exitD. Only after the fire alarm stops

Correct answer: A. Life safety comes first; extinguishers should only be used when trained and conditions are safe.

Question 22 of 50Safety

If you spill a flammable liquid, what is the safest response?

A. Control ignition sources, follow the spill procedure and report itB. Ignore it if it evaporates quicklyC. Cover it with paperD. Wash it into a drain

Correct answer: A. Flammable spills can ignite and spread; site spill and fire controls should be followed.

Question 23 of 50High risk activities

What is the safest position when a machine is slewing or turning?

A. Directly behind the counterweightB. Outside the machine's operating and crush zonesC. On the machine stepsD. Between the machine and a fixed wall

Correct answer: B. People can be crushed between moving plant and fixed objects; exclusion zones are critical.

Question 24 of 50High risk activities

What is a major danger near reversing construction vehicles?

A. Clean windscreensB. Loud radiosC. Low tyre pressure onlyD. Driver blind spots

Correct answer: D. Large vehicles can have significant blind spots, so segregation, visibility and safe reversing controls are important.

Question 25 of 50Safety

Before changing a blade or accessory on a power tool, what should you normally do?

A. Keep the trigger pressedB. Isolate the tool from its power sourceC. Remove the guard permanentlyD. Ask a colleague to hold the blade

Correct answer: B. Isolation prevents accidental start-up while hands are near the cutting or moving parts.

Question 26 of 50Safety

What should you do if the cable on a power tool is damaged?

A. Stop using it, isolate it from use and report the defectB. Ask a colleague to hold the cableC. Use it only in dry weatherD. Wrap the damaged area with ordinary tape and continue

Correct answer: A. Damaged electrical equipment should be removed from use until properly repaired or replaced.

Question 27 of 50Safety

What should you do with a defective ladder, tool or piece of equipment?

A. Loan it to another workerB. Hide the defectC. Use it only for short tasksD. Take it out of use and report/label it according to site procedure

Correct answer: D. Defective equipment should be prevented from being used until made safe.

Question 28 of 50Environmental & specialist awareness

Why is environmental incident reporting important?

A. It allows prompt control, clean-up and prevention of recurrenceB. It is unnecessary for small sitesC. Only to calculate wagesD. It replaces spill response

Correct answer: A. Reporting helps limit impacts and supports corrective action.

Question 29 of 50Safety

What is a permit-to-work system used for?

A. To replace competence requirementsB. To issue wagesC. To record lunch breaksD. To control certain high-risk activities through formal authorisation and precautions

Correct answer: D. Permits help ensure specified precautions are in place before and during high-risk work.

Question 30 of 50Occupational health

What should you do if you unexpectedly disturb material that you suspect may contain asbestos?

A. Put the material in a normal waste skipB. Sweep up the dustC. Stop work, avoid further disturbance and report itD. Keep working but wear gloves

Correct answer: C. Suspected asbestos should not be disturbed; stop work and follow the site's asbestos procedures.

Question 31 of 50Environmental & specialist awareness

Why should plant engines not be left idling unnecessarily?

A. It makes batteries last longerB. It wastes fuel and increases emissions and noiseC. It improves air qualityD. It prevents oil leaks

Correct answer: B. Reducing unnecessary idling lowers fuel use, emissions and noise.

Question 32 of 50Occupational health

Why must respiratory protective equipment be suitable for the hazard?

A. The colour is the only important factorB. Different filters and respirators protect against different contaminantsC. RPE replaces all other controlsD. All masks provide identical protection

Correct answer: B. RPE must be correctly selected for the contaminant, concentration and task.

Question 33 of 50Occupational health

When cutting materials that can produce silica dust, which control is usually preferable to relying only on a dust mask?

A. Work faster to reduce exposure timeB. Use effective extraction or water suppression at sourceC. Open a nearby door onlyD. Remove eye protection

Correct answer: B. Controlling dust at source with extraction or suppression is more effective than relying on PPE alone.

Question 34 of 50Working environment

What should you do if you are asked to carry out a task you have not been trained or authorised to do?

A. Try it once to gain experienceB. Do it only if no supervisor is watchingC. Ask another untrained worker to helpD. Explain that you are not competent or authorised and seek instruction

Correct answer: D. Workers should only undertake tasks for which they are competent, trained and authorised where required.

Question 35 of 50Environmental & specialist awareness

What is a good way to reduce dust leaving a construction site?

A. Remove wheel-wash facilitiesB. Increase vehicle speedsC. Sweep dry dust into the roadD. Use source controls, damping/extraction and keep routes clean

Correct answer: D. Source control and good housekeeping reduce airborne dust and off-site nuisance.

Question 36 of 50Environmental & specialist awareness

What should you do before entering an area where a crane is operating?

A. Wave from behind the craneB. Walk under the hook quicklyC. Assume the operator can see youD. Follow the exclusion-zone and communication controls and obtain permission if required

Correct answer: D. Crane operations need controlled access because of suspended loads, slewing and blind spots.

Question 37 of 50High risk activities

When should work at height be avoided?

A. Never; ladders are always acceptableB. Only above five metresC. Only when it rainsD. Whenever the task can reasonably be done from a safe position without working at height

Correct answer: D. The hierarchy for work at height starts by avoiding work at height where reasonably practicable.

Question 38 of 50Safety

Why should gas cylinders be stored upright and secured where required?

A. To keep them warmerB. To prevent them falling and damaging the valve or becoming a projectileC. To make labels easier to read onlyD. To increase gas pressure

Correct answer: B. A damaged cylinder valve can release energy violently, so cylinders should be secured and correctly stored.

Question 39 of 50High risk activities

Why are banksmen used for some vehicle movements?

A. To speed up reversingB. To inspect wagesC. To replace vehicle brakesD. To help control movements where the driver has restricted visibility

Correct answer: D. A trained banksman can guide movements and help keep people out of danger zones.

Question 40 of 50High risk activities

What should you do if the ground beneath access equipment is soft or unstable?

A. Work fasterB. Add extra people to the platformC. Lower tyre pressureD. Stop and ensure the equipment is supported on suitable stable ground or designed measures

Correct answer: D. Unstable ground can cause overturning or collapse of access equipment.

Question 41 of 50Safety

Where should flammable materials be kept?

A. Under stairways used for evacuationB. In escape routesC. Next to heaters so they stay dryD. In designated storage away from ignition sources, following site rules

Correct answer: D. Segregated, suitable storage reduces fire and ignition risk.

Question 42 of 50Working environment

What should you do if site conditions change and the planned safe method no longer seems suitable?

A. Stop and ask for the risk assessment or method to be reviewedB. Ignore the change if the task is almost finishedC. Continue because the paperwork has already been signedD. Ask a colleague to take responsibility

Correct answer: A. Safe systems of work should be reviewed when conditions change or new hazards appear.

Question 43 of 50Environmental & specialist awareness

Why must waste skips not be overfilled?

A. It makes the skip too easy to liftB. It improves recyclingC. It only affects appearanceD. Materials can fall out during use or transport

Correct answer: D. Overfilled skips create falling-object, transport and litter risks.

Question 44 of 50High risk activities

Why is an excavation dangerous even if it is not very deep?

A. Only water is a hazardB. Only excavators are at riskC. Sides can collapse and people can fall in or encounter services depending on conditionsD. Shallow excavations are always safe

Correct answer: C. Excavation risk depends on ground, depth, loads, access, services and other conditions—not one simple depth threshold.

Question 45 of 50Working environment

What is the safest action if lighting in a work area is too poor to see hazards clearly?

A. Use a phone torch and continueB. Ask a colleague to stand nearbyC. Work more slowly without reporting itD. Stop or delay the task until suitable lighting is provided

Correct answer: D. Adequate lighting is needed to see hazards, access routes and the work itself safely.

Question 46 of 50Working environment

Why should you know the location of the site assembly point?

A. It is where tools are issuedB. You may need to report there during an emergency evacuationC. It is where deliveries are signed forD. It is the normal lunch area

Correct answer: B. The assembly point allows people to be accounted for after an evacuation.

Question 47 of 50Environmental & specialist awareness

Why may wheel-wash facilities be used at site exits?

A. To reduce mud and debris being tracked onto public roadsB. To test water pressureC. To cool vehicle brakesD. To clean workers' boots only

Correct answer: A. Keeping public roads clear of site mud reduces environmental nuisance and road hazards.

Question 48 of 50Working environment

What should you do when you arrive at a construction site for the first time?

A. Start work immediately if you know the tradeB. Only read the emergency noticeboardC. Attend the site induction and follow the site rulesD. Wait in the welfare area until someone finds you

Correct answer: C. A site induction explains local hazards, emergency arrangements, welfare facilities and site-specific rules before work begins.

Question 49 of 50Environmental & specialist awareness

What should you do first if oil or fuel is spilled on site?

A. Ignore small spillsB. Stop the source if safe, contain the spill and follow the site's spill procedureC. Wash it into a surface-water drainD. Cover it with soil and leave it

Correct answer: B. Prompt containment helps prevent pollution and allows correct clean-up and disposal.

Question 50 of 50Occupational health

Which lifting technique is generally safer for a manageable load?

A. Twist while risingB. Keep the load at arm's lengthC. Keep the load close, use a stable stance and avoid twistingD. Lift with a rounded back and straight legs

Correct answer: C. Keeping the load close and maintaining a stable, controlled posture reduces strain.

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Official format reference: CITB states that the Operatives HS&E test contains 50 questions, lasts 45 minutes and requires at least 45 correct answers. Check current CITB guidance.

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Updated 2026-08-19. Questions are original revision content designed around common construction health, safety and environmental principles.