FREE PRACTICE TEST 15

CSCS Mock Test 15: 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.

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Answered 0/50

Question 1 of 50Environmental & specialist awareness

What is the purpose of bunding around some fuel or chemical storage?

A. To provide seatingB. To keep containers warmerC. To improve ventilationD. To contain leaks or spills

Correct answer: D. Secondary containment helps stop liquids spreading into soil or drainage systems.

Question 2 of 50Safety

What is the first priority if you discover a fire?

A. Save toolsB. Raise the alarm and follow the emergency procedureC. Continue working unless flames are largeD. Open all doors

Correct answer: B. Raising the alarm allows others to evacuate and emergency arrangements to begin.

Question 3 of 50Occupational health

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

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

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

Question 4 of 50Working environment

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

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

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

Question 5 of 50High risk activities

Why are overhead power lines dangerous to cranes and plant?

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

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

Question 6 of 50Environmental & specialist awareness

Why should plant engines not be left idling unnecessarily?

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

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

Question 7 of 50Safety

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

A. To keep them warmerB. To make labels easier to read onlyC. 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 8 of 50Working environment

Why are exclusion zones set up around certain activities?

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

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

Question 9 of 50Safety

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

A. It makes clothing shrinkB. It always causes hearing loss immediatelyC. It reduces tool pressureD. 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 10 of 50Working environment

What is a method statement mainly used for?

A. Setting out a safe sequence and method for carrying out workB. Ordering materials from suppliersC. Recording holiday entitlementD. Listing employee salaries

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

Question 11 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 12 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 13 of 50Occupational health

Why should you wash your hands before eating or smoking after handling hazardous materials?

A. To reduce accidental ingestion or transfer of contaminantsB. To reduce vibrationC. To prevent hearing damageD. To improve grip strength

Correct answer: A. Handwashing prevents hazardous substances being transferred to food, cigarettes or the face.

Question 14 of 50Working environment

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

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

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

Question 15 of 50Environmental & specialist awareness

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

A. To keep them near drainsB. To reduce fire and pollution risk and allow spill containmentC. To warm the fuelD. To make them easier to hide

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

Question 16 of 50Occupational health

Why is asbestos dangerous?

A. It always catches fireB. It only causes skin irritationC. Airborne fibres can cause serious diseases many years after exposureD. It causes instant electrical shock

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

Question 17 of 50Working environment

Why should emergency routes and exits never be blocked?

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

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

Question 18 of 50High risk activities

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

A. Outside the machine's operating and crush zonesB. Between the machine and a fixed wallC. On the machine stepsD. Directly behind the counterweight

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

Question 19 of 50Working environment

Why should materials be stored securely and tidily?

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

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

Question 20 of 50High risk activities

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

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

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

Question 21 of 50Environmental & specialist awareness

What should you do if a chemical container is leaking?

A. Keep people away, follow the spill procedure and report itB. Hide it in general wasteC. Pour the contents into a drainD. Carry it through the site by hand

Correct answer: A. Leaks should be controlled using suitable spill and hazardous-substance procedures.

Question 22 of 50Occupational health

How can vibration exposure from power tools be reduced?

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

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

Question 23 of 50High risk activities

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

A. Add extra people to the platformB. Work fasterC. Stop and ensure the equipment is supported on suitable stable ground or designed measuresD. Lower tyre pressure

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

Question 24 of 50Occupational health

Why is health surveillance used for some construction hazards?

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

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

Question 25 of 50Safety

If someone is receiving an electric shock from live equipment, what should you do first if it is safe?

A. Isolate the electrical supply before touching the personB. Move the cable with a metal toolC. Pour water on the equipmentD. Pull them away with bare hands

Correct answer: A. You must avoid becoming a second casualty; safely isolate the power before contact.

Question 26 of 50Working environment

What is a near miss?

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

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

Question 27 of 50Environmental & specialist awareness

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

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

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

Question 28 of 50Safety

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

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

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

Question 29 of 50Safety

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

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

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

Question 30 of 50Occupational health

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

A. Throw it onto a trolleyB. Get help or use suitable mechanical assistanceC. Drag it across an access routeD. 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 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 32 of 50Environmental & specialist awareness

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

A. They reduce concrete strengthB. They always block toiletsC. 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 33 of 50Environmental & specialist awareness

What is the purpose of a spill kit?

A. To clean PPE onlyB. To contain and absorb certain spills so they can be handled safelyC. To test concrete strengthD. To repair electrical tools

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

Question 34 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. Rely on memory of old plansC. Pour water on the areaD. Start with a mechanical excavator

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

Question 35 of 50Environmental & specialist awareness

What should happen to concrete washout water?

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

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

Question 36 of 50Occupational health

What is the best reason to report stress or mental-health concerns that are affecting safe work?

A. Only managers can raise such concernsB. It automatically leads to dismissalC. It is unrelated to safetyD. Support and adjustments may help prevent errors and protect wellbeing

Correct answer: D. Wellbeing can affect concentration and decision-making; early support can help maintain safe performance.

Question 37 of 50Safety

Where should flammable materials be kept?

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

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

Question 38 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 prohibitionD. A mandatory action

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

Question 39 of 50Working environment

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

A. A prohibition or something you must not doB. First-aid equipmentC. A mandatory actionD. A safe escape route

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

Question 40 of 50High risk activities

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

A. To replace fire extinguishersB. To confirm specified fire and safety precautions are in placeC. To record the welder's wagesD. To allow smoking in the work area

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

Question 41 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. Lock the doorD. Leave it because it improves ventilation

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

Question 42 of 50High risk activities

Who should operate an excavator, telehandler or similar plant?

A. A labourer if supervised from a distanceB. Any worker over 18C. Anyone with a car licenceD. A trained, competent and authorised operator

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

Question 43 of 50High risk activities

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

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

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

Question 44 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. Smell the contentsD. Do not open or move it unnecessarily; report it and follow site procedures

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

Question 45 of 50High risk activities

Why are banksmen used for some vehicle movements?

A. To speed up reversingB. To replace vehicle brakesC. To help control movements where the driver has restricted visibilityD. To inspect wages

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

Question 46 of 50Working environment

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

A. Ask a colleague to take responsibilityB. Continue because the paperwork has already been signedC. Ignore the change if the task is almost finishedD. Stop and ask for the risk assessment or method to be reviewed

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

Question 47 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 48 of 50High risk activities

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

A. Working fasterB. Collective protection such as suitable platforms and guardrailsC. Relying only on a worker's balanceD. Removing edge protection for access

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

Question 49 of 50Occupational health

What can repeated skin contact with wet cement cause?

A. Heat exhaustion onlyB. Vibration white fingerC. Hearing lossD. Dermatitis and chemical burns

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

Question 50 of 50Safety

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

A. Stop using it and report/check the defectB. Remove the safety guardC. Increase the speedD. Hit it to make it work normally

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

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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.