FREE PRACTICE TEST 40

CSCS Mock Test 40: 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 explanationsFull Mixed Operatives-Style Revision

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.

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Answered 0/50

Question 1 of 50Occupational health

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

A. Temporary eye strain onlyB. Silicosis and other serious lung diseaseC. Sprained anklesD. Hearing loss

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

Question 2 of 50High risk activities

Why should lifting accessories such as slings be checked before use?

A. To make them look cleanB. To avoid using a lift planC. Damage or incorrect selection can lead to load failureD. To increase crane speed

Correct answer: C. Lifting accessories must be suitable and free from defects that could compromise their strength.

Question 3 of 50Occupational health

Why is health surveillance used for some construction hazards?

A. To detect early signs of work-related ill health where appropriateB. To replace risk controlsC. To measure productivity onlyD. To decide who can take breaks

Correct answer: A. Health surveillance can help detect early effects of exposure, but it does not replace prevention and control.

Question 4 of 50Occupational health

What is the safest approach to reducing exposure to hazardous fumes?

A. Use effective ventilation or extraction and follow the task controlsB. Work fasterC. Hold your breathD. Rely on smell to decide if it is safe

Correct answer: A. Engineering controls such as local exhaust ventilation can remove fumes at source.

Question 5 of 50Environmental & specialist awareness

Why should noisy work be planned carefully near neighbours?

A. To reduce nuisance and comply with site/local controlsB. To make the equipment wear fasterC. Noise outside the site is never relevantD. To eliminate the need for hearing protection

Correct answer: A. Construction noise can affect neighbours and may be subject to agreed hours and control measures.

Question 6 of 50Environmental & specialist awareness

If you discover an unidentified drum or container, what should you do?

A. Use it as a waste binB. Pour it into another containerC. Do not open or move it unnecessarily; report it and follow site proceduresD. Smell the contents

Correct answer: C. Unknown substances should be treated cautiously until identified and assessed.

Question 7 of 50Environmental & specialist awareness

What should you do if strong winds begin affecting a lifting or access operation?

A. Follow the equipment/plan limits and stop if conditions are unsafeB. Remove wind-speed checksC. Add more people as ballastD. Continue because the schedule is fixed

Correct answer: A. Wind can affect cranes, MEWPs, towers and loads; manufacturer and lift-plan limits must be respected.

Question 8 of 50Safety

Where should flammable materials be kept?

A. In escape routesB. Under stairways used for evacuationC. 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 9 of 50High risk activities

What should you do if a scaffold appears incomplete or has missing guardrails?

A. Do not use it and report the defectB. Add a rope as a handrail yourselfC. Use it only below the first liftD. Use it if you stay near the wall

Correct answer: A. Incomplete scaffolds can expose users to falls; they should not be used until made safe.

Question 10 of 50Safety

Why are reduced-voltage systems such as 110 V commonly used on construction sites?

A. They remove the need for electrical inspectionsB. They make tools twice as powerfulC. They are waterproofD. They can reduce the severity of electric-shock risk compared with standard mains voltage

Correct answer: D. Reduced-voltage supplies can reduce shock risk, but equipment still needs correct use and maintenance.

Question 11 of 50Working environment

What is the best response if a task creates a hazard for people working nearby?

A. Only warn your own teamB. Assume they will notice itC. Coordinate the work and put controls or segregation in placeD. Work faster

Correct answer: C. Activities should be coordinated so one team's work does not expose others to uncontrolled risk.

Question 12 of 50Safety

Why should emergency stop controls be kept unobstructed?

A. They prevent tools being cleanedB. They are only decorativeC. They may need to be activated immediatelyD. They increase production

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

Question 13 of 50Working environment

Why are site inspections carried out?

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

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

Question 14 of 50Working environment

If you see someone enter a clearly marked exclusion zone without authorisation, what is the safest response?

A. Ignore them because they accepted the riskB. Warn them if safe to do so and inform the responsible supervisorC. Remove the signsD. Follow them into the zone

Correct answer: B. Unauthorised entry should be challenged safely and reported so the hazard remains controlled.

Question 15 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 16 of 50High risk activities

Why are overhead power lines dangerous to cranes and plant?

A. They only interfere with GPSB. Electricity can arc or conduct through equipment even without direct contactC. They make radios noisyD. They reduce fuel efficiency

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

Question 17 of 50High risk activities

Before entering a confined space, what should be in place?

A. A mobile phoneB. A suitable risk assessment, permit/control system and emergency/rescue arrangementsC. Only a torchD. A colleague outside with no instructions

Correct answer: B. Confined-space entry requires planning, atmospheric controls where needed, competent people and rescue arrangements.

Question 18 of 50Occupational health

Why is fatigue a safety and health concern?

A. It can reduce concentration, judgement and reaction timeB. It improves risk awarenessC. It only affects office workersD. It makes hearing protection unnecessary

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

Question 19 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. Whether the task is indoorsC. Only the colour of the welding screenD. 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 20 of 50Occupational health

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

A. Try to lift it once to test yourselfB. Get help or use suitable mechanical assistanceC. Drag it across an access routeD. Throw it onto a trolley

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

Question 21 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 22 of 50Safety

What is the safest approach to trailing electrical leads?

A. Run them through standing waterB. Stretch them tightly across doorwaysC. Route or protect them so they do not create trip or damage hazardsD. Cover them with loose cardboard

Correct answer: C. Cables should be managed to prevent trips, crushing, cuts and water exposure.

Question 23 of 50Environmental & specialist awareness

Why should site lighting be directed carefully at night?

A. To provide safe illumination while reducing glare and nuisance to neighbours and road usersB. To replace barriersC. To increase fuel useD. To make wildlife easier to attract

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

Question 24 of 50High risk activities

Why are banksmen used for some vehicle movements?

A. To inspect wagesB. To speed up reversingC. To help control movements where the driver has restricted visibilityD. To replace vehicle brakes

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

Question 25 of 50Working environment

Why are toolbox talks used on construction sites?

A. To inspect payroll recordsB. To discuss short, relevant safety topics with the workforceC. To replace all formal qualificationsD. To allocate annual leave

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

Question 26 of 50Occupational health

How can outdoor workers reduce harm from strong sunlight?

A. Use welding goggles as sunglassesB. Use suitable clothing, shade and sunscreen and take sensible breaksC. Work shirtlessD. Avoid drinking water

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

Question 27 of 50Environmental & specialist awareness

Why is environmental incident reporting important?

A. It replaces spill responseB. Only to calculate wagesC. It allows prompt control, clean-up and prevention of recurrenceD. It is unnecessary for small sites

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

Question 28 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 29 of 50High risk activities

What should you do if you lose sight of the banksman while operating plant under their guidance?

A. Reverse to where you last saw themB. Sound the horn and keep movingC. Continue slowlyD. Stop until communication is re-established

Correct answer: D. Loss of communication can put people at risk; movement should stop until the signal system is restored.

Question 30 of 50Environmental & specialist awareness

What should happen to concrete washout water?

A. It should be spread across soilB. It is harmless once dilutedC. It should be poured into the nearest drainD. It should be managed in a designated system and kept out of drains and watercourses

Correct answer: D. Concrete wash water is highly alkaline and can pollute water and soil.

Question 31 of 50Occupational health

If a hearing-protection zone is marked, what should you do?

A. Wear the specified hearing protectionB. Ignore the sign if you are there brieflyC. Use headphones insteadD. Only wear protection when machinery stops

Correct answer: A. Mandatory hearing protection zones indicate that suitable hearing protection must be worn.

Question 32 of 50High risk activities

Should a mobile access tower be moved while people or loose materials are on the platform?

A. Yes, if moved slowlyB. Only if the brakes are partly appliedC. No, occupants should descend and loose items be secured before movingD. Yes, if two people push

Correct answer: C. Moving an occupied tower can cause overturning or falls.

Question 33 of 50Occupational health

What can prolonged exposure to high noise levels cause?

A. Improved balanceB. Better concentrationC. Permanent hearing damageD. Stronger eyesight

Correct answer: C. Noise-induced hearing loss can be permanent, so exposure should be controlled and hearing protection used where required.

Question 34 of 50Safety

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

A. To issue wagesB. To control certain high-risk activities through formal authorisation and precautionsC. To replace competence requirementsD. To record lunch breaks

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

Question 35 of 50High risk activities

Why are toe boards fitted to many work platforms?

A. To increase platform heightB. To help prevent tools and materials being kicked or falling from the edgeC. To mark smoking areasD. To replace guardrails

Correct answer: B. Toe boards are part of edge protection and help contain materials on the platform.

Question 36 of 50Environmental & specialist awareness

How should asbestos waste be handled if produced by authorised asbestos work?

A. Mixed into general rubbleB. Broken into smaller pieces to save spaceC. Using the specified hazardous-waste controls and authorised disposal routeD. Burned on site

Correct answer: C. Asbestos waste requires strict packaging, labelling, transport and disposal controls.

Question 37 of 50Working environment

What does a yellow triangular safety sign normally indicate?

A. A safe condition or first-aid pointB. A warning or hazardC. A mandatory actionD. A prohibition

Correct answer: B. Yellow triangular signs with dark symbols are used to warn about hazards.

Question 38 of 50Environmental & specialist awareness

What should you check before using a lifting accessory?

A. Only its colourB. Whether it is the newest itemC. Whether it belongs to your employerD. Identification, suitability, condition and any required examination status

Correct answer: D. Lifting accessories need to be suitable, identifiable and in safe condition.

Question 39 of 50Environmental & specialist awareness

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

A. To cool vehicle brakesB. To reduce mud and debris being tracked onto public roadsC. To test water pressureD. To clean workers' boots only

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

Question 40 of 50Working environment

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

A. You may need to report there during an emergency evacuationB. It is where deliveries are signed forC. It is where tools are issuedD. It is the normal lunch area

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

Question 41 of 50Working environment

Why should emergency routes and exits never be blocked?

A. Blocked exits reduce heating costsB. They may be needed for rapid evacuationC. They are used only by visitorsD. They are mainly for deliveries

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

Question 42 of 50Safety

Why should access to electrical panels be kept clear?

A. So tools can be stored nearbyB. So they can be safely reached for operation or emergency isolationC. To improve Wi-Fi signalD. To allow water to drain

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

Question 43 of 50Environmental & specialist awareness

How should hazardous waste be handled?

A. Mixed with general wasteB. Washed into drainsC. Segregated, labelled and disposed of through the correct authorised routeD. Burned on site

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

Question 44 of 50Occupational health

What is the purpose of face-fit testing for tight-fitting RPE?

A. To test the colour of the filterB. To check that the specific mask can seal adequately to the wearerC. To measure hearing protectionD. To replace training

Correct answer: B. Face-fit testing helps confirm that a tight-fitting mask is suitable for the individual wearer.

Question 45 of 50Occupational health

What should you do if a chemical splashes onto your skin?

A. Follow the product/site emergency instructions, rinse as directed and seek help if neededB. Rub the area vigorouslyC. Wait until the end of the shiftD. Cover it with dust

Correct answer: A. Prompt decontamination and following the safety data/site procedure can limit injury.

Question 46 of 50Safety

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

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

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

Question 47 of 50Safety

Why must emergency equipment remain accessible?

A. It is used for tool storageB. Access is optional on small sitesC. It is only used during inspectionsD. It may be needed immediately during an incident

Correct answer: D. Blocked fire points, first-aid equipment or emergency controls can delay a response.

Question 48 of 50Working environment

What should happen to site rules after induction?

A. They apply only when management is presentB. They can be ignored by experienced workersC. They only apply on the first dayD. They should be followed throughout your time on the site

Correct answer: D. Site rules remain in force because they form part of the site's risk controls.

Question 49 of 50Working environment

What is the main purpose of a risk assessment?

A. To make a job take longerB. To identify hazards, assess risk and decide suitable controlsC. To record who should be blamed after an accidentD. To replace all training and supervision

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

Question 50 of 50Safety

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

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

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

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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.