FREE PRACTICE TEST 45

CSCS Mock Test 45: 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 explanationsPlant, Lifting And Vehicle Awareness

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 50Working environment

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

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

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

Question 2 of 50Working environment

Why are exclusion zones set up around certain activities?

A. To make the site look organisedB. To provide a smoking areaC. To create a place for storing personal belongingsD. To keep unauthorised people away from a hazardous area

Correct answer: D. Exclusion zones reduce exposure to hazards such as lifting operations, demolition, plant or falling materials.

Question 3 of 50High risk activities

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

A. Lower tyre pressureB. Add extra people to the platformC. Stop and ensure the equipment is supported on suitable stable ground or designed measuresD. Work faster

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

Question 4 of 50Safety

Why should you never remove an electrical plug earth pin or defeat an RCD?

A. It changes the voltage colourB. It makes tools too quietC. It can remove important protection against electric shockD. It only affects battery life

Correct answer: C. Protective electrical features are safety controls and must not be bypassed.

Question 5 of 50Occupational health

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

A. Temporary eye strain onlyB. Hearing lossC. Sprained anklesD. Silicosis and other serious lung disease

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

Question 6 of 50Working environment

What should you do if you do not understand a site instruction?

A. Copy what another worker is doing even if their task differsB. Ignore it if you are experiencedC. Ask for clarification before continuingD. Guess what it means

Correct answer: C. You should understand the instruction and the risks before starting or continuing work.

Question 7 of 50Occupational health

What should you do if you develop persistent numbness in your fingers after using vibrating tools?

A. Report the symptoms and seek occupational health or medical adviceB. Use the tool with one handC. Increase your daily exposure slowlyD. Ignore it until the next annual check

Correct answer: A. Early reporting of symptoms can prevent further exposure and allow assessment.

Question 8 of 50Working environment

Why are site inspections carried out?

A. To decide who gets overtimeB. To identify unsafe conditions and check controls are workingC. To replace worker trainingD. Only to prepare for client visits

Correct answer: B. Inspections help identify defects, changing conditions and failures in existing controls.

Question 9 of 50High risk activities

What should you do around a suspended load?

A. Touch it to check its weightB. Walk under it if wearing a hard hatC. Stand directly beneath it to guide the operatorD. Stay clear and never position yourself underneath it

Correct answer: D. Suspended loads can fall or swing unpredictably; exclusion is essential.

Question 10 of 50Environmental & specialist awareness

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

A. To cool vehicle brakesB. To clean workers' boots onlyC. To reduce mud and debris being tracked onto public roadsD. To test water pressure

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

Question 11 of 50Safety

Why should water not be used on live electrical equipment?

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

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

Question 12 of 50High risk activities

Who should give standard signals to a crane or plant operator during a lifting operation?

A. The newest workerB. Any worker nearbyC. Only the delivery driverD. A designated competent signaller/banksman where required

Correct answer: D. Clear communication through a designated competent signaller helps prevent conflicting instructions.

Question 13 of 50Working environment

What is the main purpose of a risk assessment?

A. To identify hazards, assess risk and decide suitable controlsB. To replace all training and supervisionC. To make a job take longerD. To record who should be blamed after an accident

Correct answer: A. Risk assessment is used to identify hazards and put proportionate controls in place before people are harmed.

Question 14 of 50Occupational health

What does COSHH relate to?

A. Managing scaffold inspectionsB. Controlling exposure to substances hazardous to healthC. Setting wage ratesD. Controlling vehicle parking

Correct answer: B. COSHH requires hazardous substances and exposure routes to be assessed and controlled.

Question 15 of 50Safety

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

A. Whenever any fire is visibleB. Only after the fire alarm stopsC. Only if you are trained, it is safe and you have a clear escape routeD. If you can stand between the fire and the exit

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

Question 16 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. All masks provide identical protectionD. RPE replaces all other controls

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

Question 17 of 50Safety

What should you do if you find a fire door wedged open when it should be closed?

A. Remove the obstruction if safe and report the issueB. Paint a warning sign on itC. Leave it because it improves ventilationD. Lock the door

Correct answer: A. Fire doors are part of compartmentation and should not be defeated unless designed to be held open safely.

Question 18 of 50Environmental & specialist awareness

Why should site lighting be directed carefully at night?

A. To make wildlife easier to attractB. To replace barriersC. To provide safe illumination while reducing glare and nuisance to neighbours and road usersD. To increase fuel use

Correct answer: C. Lighting should support safe work without creating glare, distraction or unnecessary environmental impact.

Question 19 of 50Working environment

Why should emergency routes and exits never be blocked?

A. They are mainly for deliveriesB. Blocked exits reduce heating costsC. They may be needed for rapid evacuationD. They are used only by visitors

Correct answer: C. Emergency routes must stay available so people can leave quickly and safely.

Question 20 of 50Environmental & specialist awareness

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

A. Walk under the hook quicklyB. Wave from behind the craneC. 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 21 of 50High risk activities

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

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

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

Question 22 of 50Environmental & specialist awareness

Why should different waste streams be separated where the site system requires it?

A. It supports safe handling, recycling and lawful disposalB. It removes the need for skipsC. It increases the amount of wasteD. It makes all waste non-hazardous

Correct answer: A. Segregation can improve recycling and prevent contamination of recyclable or hazardous waste streams.

Question 23 of 50Environmental & specialist awareness

What should you do if work could disturb protected wildlife or nesting birds?

A. Stop or follow the ecological controls and seek advice before disturbing themB. Use louder machineryC. Ignore it if the programme is busyD. Move the nest yourself

Correct answer: A. Ecological constraints should be identified and managed in line with site and legal requirements.

Question 24 of 50Safety

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

A. Isolate the tool from its power sourceB. Ask a colleague to hold the bladeC. Remove the guard permanentlyD. Keep the trigger pressed

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

Question 25 of 50High risk activities

What is the approximate safe setup rule for a leaning ladder?

A. About one unit out for every four units upB. As vertical as possibleC. One unit out for every one unit upD. Four units out for every one unit up

Correct answer: A. The common 1-in-4 setup gives a leaning ladder an angle of about 75 degrees.

Question 26 of 50High risk activities

When should work at height be avoided?

A. Only above five metresB. Never; ladders are always acceptableC. Whenever the task can reasonably be done from a safe position without working at heightD. Only when it rains

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

Question 27 of 50Environmental & specialist awareness

Why must waste skips not be overfilled?

A. Materials can fall out during use or transportB. It only affects appearanceC. It improves recyclingD. It makes the skip too easy to lift

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

Question 28 of 50Safety

What should you do if a machine guard is missing?

A. Wear thicker gloves and continueB. Use the machine slowlyC. Ask someone to watch the moving partsD. Do not use the machine and report it

Correct answer: D. Guards are a primary control against contact with dangerous moving parts.

Question 29 of 50Safety

What should you do if you smell gas or suspect a gas leak?

A. Switch electrical equipment on to find the sourceB. Stop work, avoid ignition sources, move to safety and follow the emergency procedureC. Use a flame to test for gasD. Ignore it outdoors

Correct answer: B. Suspected gas leaks require prompt isolation from ignition and emergency reporting.

Question 30 of 50Occupational health

Why should dust not be cleaned up by dry sweeping when it can be avoided?

A. It damages broomsB. Dry sweeping can put fine dust back into the airC. It makes the floor too shinyD. It creates static only

Correct answer: B. Suitable vacuuming or wet methods can reduce airborne dust compared with dry sweeping.

Question 31 of 50Working environment

What does a blue circular safety sign usually mean?

A. An action is prohibitedB. A substance is toxicC. A fire extinguisher is nearbyD. A mandatory action must be followed

Correct answer: D. Blue circular signs normally communicate mandatory actions such as wearing specified PPE.

Question 32 of 50Environmental & specialist awareness

Why should you never ride on the forks or bucket of plant equipment?

A. It slows the engineB. They are not designed as personnel platforms and a fall or crushing injury can resultC. It can scratch the paintD. It is allowed if the operator agrees

Correct answer: B. People should only be lifted using equipment designed and authorised for lifting persons.

Question 33 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 34 of 50Occupational health

Why is asbestos dangerous?

A. It only causes skin irritationB. Airborne fibres can cause serious diseases many years after exposureC. It causes instant electrical shockD. It always catches fire

Correct answer: B. Inhaled asbestos fibres can cause fatal lung diseases with long latency periods.

Question 35 of 50Safety

Why should emergency stop controls be kept unobstructed?

A. They are only decorativeB. They may need to be activated immediatelyC. They prevent tools being cleanedD. They increase production

Correct answer: B. Emergency stops must be readily accessible if dangerous movement needs to be stopped quickly.

Question 36 of 50High risk activities

What should you do if a lifting sling has visible cuts, severe wear or damage?

A. Remove it from use and report itB. Use it for a lighter load without telling anyoneC. Wrap it with tapeD. Tie a knot in it

Correct answer: A. Damaged lifting accessories must not be used unless formally assessed and made safe.

Question 37 of 50High risk activities

If work at height cannot be avoided, what should be prioritised?

A. Relying only on a worker's balanceB. Working fasterC. Collective protection such as suitable platforms and guardrailsD. Removing edge protection for access

Correct answer: C. Collective fall prevention protects everyone and is generally preferred before personal fall protection.

Question 38 of 50High risk activities

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

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

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

Question 39 of 50Occupational health

Why is fatigue a safety and health concern?

A. It only affects office workersB. It makes hearing protection unnecessaryC. It can reduce concentration, judgement and reaction timeD. It improves risk awareness

Correct answer: C. Fatigue can impair performance and increase the likelihood of mistakes and incidents.

Question 40 of 50Working environment

Why are toolbox talks used on construction sites?

A. To allocate annual leaveB. To inspect payroll recordsC. To discuss short, relevant safety topics with the workforceD. To replace all formal qualifications

Correct answer: C. Toolbox talks provide focused, practical reminders about hazards, controls and safe working methods.

Question 41 of 50Occupational health

How can outdoor workers reduce harm from strong sunlight?

A. Work shirtlessB. Use suitable clothing, shade and sunscreen and take sensible breaksC. Avoid drinking waterD. Use welding goggles as sunglasses

Correct answer: B. UV exposure can damage skin; protective clothing, sunscreen and shade reduce risk.

Question 42 of 50Environmental & specialist awareness

How should hazardous waste be handled?

A. Washed into drainsB. Segregated, labelled and disposed of through the correct authorised routeC. Mixed with general wasteD. Burned on site

Correct answer: B. Hazardous waste requires controlled storage and disposal to protect people and the environment.

Question 43 of 50Environmental & specialist awareness

What should happen if you discover contaminated soil during excavation?

A. Mix it with clean soilB. Stop or isolate as required and report it so the material can be assessed and managedC. Wash it into a drainD. Spread it across the site

Correct answer: B. Unexpected contamination should be assessed before further disturbance or disposal.

Question 44 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. Explain that you are not competent or authorised and seek instructionD. Ask another untrained worker to help

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

Question 45 of 50High risk activities

Before using a MEWP, what should the operator confirm?

A. They are trained/authorised and the machine and ground conditions are suitableB. It can be driven on any slopeC. Guardrails can be removed for accessD. The platform can carry unlimited weight

Correct answer: A. MEWP safety depends on competent operation, pre-use checks, safe ground and following the manufacturer's limits.

Question 46 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 47 of 50Occupational health

What is a sensible action if you feel unwell from heat while working?

A. Keep working until the task is completeB. Wear extra layersC. Drink only energy drinksD. Stop, move to a cooler area, hydrate and report symptoms

Correct answer: D. Heat illness can worsen quickly; early cooling, hydration and reporting are important.

Question 48 of 50Environmental & specialist awareness

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

A. They only affect drinking water on siteB. They always block toiletsC. They may flow directly to watercourses and cause pollutionD. They reduce concrete strength

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

Question 49 of 50Safety

Why should access to electrical panels be kept clear?

A. To allow water to drainB. So tools can be stored nearbyC. So they can be safely reached for operation or emergency isolationD. To improve Wi-Fi signal

Correct answer: C. Electrical controls may need rapid access for isolation, inspection or emergency response.

Question 50 of 50Safety

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

A. To increase gas pressureB. To make labels easier to read onlyC. To prevent them falling and damaging the valve or becoming a projectileD. To keep them warmer

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

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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.