FREE PRACTICE TEST 42

CSCS Mock Test 42: 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 explanationsPpe, Hazards And Safe Systems Of Work

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 50High risk activities

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

A. Sound the horn and keep movingB. Continue slowlyC. Stop until communication is re-establishedD. Reverse to where you last saw them

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

Question 2 of 50Safety

Why should emergency stop controls be kept unobstructed?

A. They may need to be activated immediatelyB. They increase productionC. They prevent tools being cleanedD. They are only decorative

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

Question 3 of 50High risk activities

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

A. Only the delivery driverB. A designated competent signaller/banksman where requiredC. Any worker nearbyD. The newest worker

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

Question 4 of 50Environmental & specialist awareness

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

A. Mixed into general rubbleB. Using the specified hazardous-waste controls and authorised disposal routeC. Burned on siteD. Broken into smaller pieces to save space

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

Question 5 of 50Working environment

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

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

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

Question 6 of 50Environmental & specialist awareness

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

A. Pour it into another containerB. Use it as a waste binC. 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 50Working environment

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

A. Work more slowly without reporting itB. Stop or delay the task until suitable lighting is providedC. Ask a colleague to stand nearbyD. Use a phone torch and continue

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

Question 8 of 50Safety

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

A. To replace competence requirementsB. To record lunch breaksC. To control certain high-risk activities through formal authorisation and precautionsD. To issue wages

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

Question 9 of 50Occupational health

How can vibration exposure from power tools be reduced?

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

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

Question 10 of 50Safety

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

A. They make tools twice as powerfulB. They can reduce the severity of electric-shock risk compared with standard mains voltageC. They remove the need for electrical inspectionsD. They are waterproof

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

Question 11 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 increases the amount of wasteC. It makes all waste non-hazardousD. It removes the need for skips

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

Question 12 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. Rely on smell to decide if it is safeC. Work fasterD. Hold your breath

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

Question 13 of 50Working environment

Who should report a hazard that could injure someone on site?

A. Only the person who created the hazardB. Only a visiting inspectorC. Only the health and safety managerD. Anyone who notices the hazard

Correct answer: D. Everyone on site has a role in reporting hazards so they can be controlled promptly.

Question 14 of 50Working environment

Why should materials be stored securely and tidily?

A. Only to improve photographs of the siteB. To reduce collapse, trip and access risksC. To avoid using storage racksD. So workers can climb on them

Correct answer: B. Stable, organised storage helps prevent falling materials, blocked routes and manual handling problems.

Question 15 of 50Environmental & specialist awareness

Why is environmental incident reporting important?

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

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

Question 16 of 50Environmental & specialist awareness

What is a sensible control when refuelling plant?

A. Leave the nozzle unattendedB. Refuel next to an open drainC. Use the designated area/process, avoid overfilling and have spill controls availableD. Smoke nearby so you can see wind direction

Correct answer: C. Controlled refuelling reduces fire and pollution risk.

Question 17 of 50High risk activities

Why must demolition work be carefully planned?

A. Demolition is safe once windows are removedB. Planning is only required for tall buildingsC. Structures can become unstable and hazards such as services and hazardous materials must be controlledD. Only noise needs controlling

Correct answer: C. Demolition can create collapse, falling material, service, dust and hazardous-material risks.

Question 18 of 50Working environment

What do green safety signs commonly identify?

A. Electrical voltageB. Prohibited activitiesC. Mandatory PPED. Safe conditions such as emergency exits or first aid

Correct answer: D. Green signs are associated with safe conditions such as emergency exits and first-aid locations.

Question 19 of 50Working environment

What does a yellow triangular safety sign normally indicate?

A. A prohibitionB. A safe condition or first-aid pointC. A warning or hazardD. A mandatory action

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

Question 20 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 replace all training and supervisionD. To record who should be blamed after an accident

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

Question 21 of 50High risk activities

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

A. Damage or incorrect selection can lead to load failureB. To make them look cleanC. To increase crane speedD. To avoid using a lift plan

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

Question 22 of 50High risk activities

Who should operate an excavator, telehandler or similar plant?

A. Anyone with a car licenceB. A trained, competent and authorised operatorC. A labourer if supervised from a distanceD. Any worker over 18

Correct answer: B. Plant operation requires competence and site authorisation appropriate to the equipment and task.

Question 23 of 50Occupational health

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

A. Check the assessment, label/SDS and required controlsB. Use it outdoors without further checksC. Mix it with waterD. Smell it to identify the hazard

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

Question 24 of 50High risk activities

What is a major danger near reversing construction vehicles?

A. Low tyre pressure onlyB. Clean windscreensC. Driver blind spotsD. Loud radios

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

Question 25 of 50High risk activities

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

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

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

Question 26 of 50High risk activities

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

A. Between the machine and a fixed wallB. Directly behind the counterweightC. On the machine stepsD. Outside the machine's operating and crush zones

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

Question 27 of 50Occupational health

Where can you find manufacturer information about the hazards and safe handling of a chemical product?

A. Delivery driver's licenceB. TimesheetC. Safety Data SheetD. Site map only

Correct answer: C. Safety Data Sheets provide hazard, handling, storage and emergency information for chemical products.

Question 28 of 50High risk activities

When should work at height be avoided?

A. Only when it rainsB. Whenever the task can reasonably be done from a safe position without working at heightC. Only above five metresD. Never; ladders are always acceptable

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

Question 29 of 50Environmental & specialist awareness

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

A. They always block toiletsB. They reduce concrete strengthC. They may flow directly to watercourses and cause pollutionD. They only affect drinking water on site

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

Question 30 of 50Occupational health

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

A. Drag it across an access routeB. Get help or use suitable mechanical assistanceC. Throw it onto a trolleyD. Try to lift it once to test yourself

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

Question 31 of 50Safety

What should you do if a machine guard is missing?

A. Use the machine slowlyB. Wear thicker gloves and continueC. 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 32 of 50Environmental & specialist awareness

Why should noisy work be planned carefully near neighbours?

A. To eliminate the need for hearing protectionB. Noise outside the site is never relevantC. To reduce nuisance and comply with site/local controlsD. To make the equipment wear faster

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

Question 33 of 50Occupational health

Why is health surveillance used for some construction hazards?

A. To decide who can take breaksB. To detect early signs of work-related ill health where appropriateC. To replace risk controlsD. To measure productivity only

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

Question 34 of 50Safety

What should you do when a fire alarm sounds on site?

A. Finish the current task firstB. Wait for smoke to appearC. Collect all your toolsD. Stop work and follow the site's evacuation procedure

Correct answer: D. Fire alarms require prompt evacuation in line with the site emergency plan.

Question 35 of 50Safety

Where should flammable materials be kept?

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

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

Question 36 of 50Occupational health

How can outdoor workers reduce harm from strong sunlight?

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

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

Question 37 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 38 of 50Safety

Why should compressed air not be used to clean dust from clothing or skin?

A. It always causes hearing loss immediatelyB. It reduces tool pressureC. It makes clothing shrinkD. It can drive particles into the body and create serious injury or airborne dust

Correct answer: D. Compressed air can cause injection injuries and aerosolise hazardous dust.

Question 39 of 50Environmental & specialist awareness

Why should site lighting be directed carefully at night?

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

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

Question 40 of 50Working environment

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

A. Coordinate the work and put controls or segregation in placeB. Work fasterC. Only warn your own teamD. Assume they will notice it

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

Question 41 of 50Safety

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

A. To make labels easier to read onlyB. To keep them warmerC. To increase gas pressureD. To prevent them falling and damaging the valve or becoming a projectile

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

Question 42 of 50Occupational health

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

A. Hearing lossB. Temporary eye strain onlyC. 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 43 of 50Safety

Before using a portable electrical tool, what should you check?

A. That it appears in good condition and any required inspection status is currentB. That the lead is as long as possibleC. That the casing has your initialsD. That it is the heaviest tool available

Correct answer: A. Pre-use checks can identify obvious damage before the tool is energised.

Question 44 of 50Occupational health

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

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

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

Question 45 of 50Working environment

What should you do if a floor opening is uncovered?

A. Step around it and say nothingB. Cover it with loose cardboardC. Prevent access and report it so suitable protection can be restoredD. Mark it with paint only

Correct answer: C. Openings should be physically protected or access prevented because a fall can cause serious injury.

Question 46 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. Ignore it if the programme is busyC. Use louder machineryD. Move the nest yourself

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

Question 47 of 50Safety

What is the purpose of lock-off or isolation procedures?

A. To make equipment run fasterB. To reserve equipment for one tradeC. To record working hoursD. To prevent equipment being energised unexpectedly during work

Correct answer: D. Secure isolation helps prevent dangerous unexpected energisation or movement.

Question 48 of 50Working environment

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

A. Wait in the welfare area until someone finds youB. Start work immediately if you know the tradeC. Only read the emergency noticeboardD. Attend the site induction and follow the site rules

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

Question 49 of 50Occupational health

Why must respiratory protective equipment be suitable for the hazard?

A. All masks provide identical protectionB. RPE replaces all other controlsC. The colour is the only important factorD. Different filters and respirators protect against different contaminants

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

Question 50 of 50Environmental & specialist awareness

Why are exclusion zones used around overhead lifting?

A. To prevent people entering areas where loads or objects could fall or swingB. To keep vehicles cleanC. To create a rest areaD. To improve radio reception

Correct answer: A. Exclusion protects people from dropped or moving loads.

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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.