FREE PRACTICE TEST 19

CSCS Mock Test 19: 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 explanationsEnvironmental Controls And Spill Response

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 can repeated skin contact with wet cement cause?

A. Heat exhaustion onlyB. Hearing lossC. Vibration white fingerD. Dermatitis and chemical burns

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

Question 2 of 50Working environment

Why are toolbox talks used on construction sites?

A. To discuss short, relevant safety topics with the workforceB. To replace all formal qualificationsC. To allocate annual leaveD. To inspect payroll records

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

Question 3 of 50Occupational health

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

A. Open a nearby door onlyB. Work faster to reduce exposure timeC. Use effective extraction or water suppression at sourceD. Remove eye protection

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

Question 4 of 50Occupational health

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

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

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

Question 5 of 50Occupational health

What does COSHH relate to?

A. Managing scaffold inspectionsB. Controlling vehicle parkingC. Setting wage ratesD. Controlling exposure to substances hazardous to health

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

Question 6 of 50Safety

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

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

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

Question 7 of 50Occupational health

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

A. To prevent hearing damageB. To improve grip strengthC. To reduce accidental ingestion or transfer of contaminantsD. To reduce vibration

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

Question 8 of 50Environmental & specialist awareness

What is the best general approach to construction waste?

A. Burn timber and packagingB. Bury waste on siteC. Prevent or reduce waste first, then reuse/recycle where practicable before disposalD. Send everything to general waste

Correct answer: C. Waste prevention and reuse generally sit above recycling and disposal in the waste hierarchy.

Question 9 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 make radios noisyD. They only interfere with GPS

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

Question 10 of 50Environmental & specialist awareness

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

A. To clean workers' boots onlyB. To cool vehicle brakesC. To test water pressureD. To reduce mud and debris being tracked onto public roads

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

Question 11 of 50Safety

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

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

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

Question 12 of 50Occupational health

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

A. It makes the floor too shinyB. It damages broomsC. It creates static onlyD. Dry sweeping can put fine dust back into the air

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

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 50Occupational health

What is the first step before manually lifting a heavy or awkward load?

A. Twist your back to get momentumB. Carry it above shoulder heightC. Lift quickly before you get tiredD. Assess the load, route and whether mechanical help or assistance is needed

Correct answer: D. Manual handling should be planned; avoid or reduce the lift where possible and assess the load and route.

Question 15 of 50High risk activities

If a vehicle operator cannot see you, what should you assume?

A. High-visibility clothing makes you visible from every angleB. They can hear youC. They may move without knowing you are there, so stay clear and gain acknowledgement before approachingD. They will automatically stop

Correct answer: C. Never rely on being seen; establish safe communication before entering a vehicle's operating area.

Question 16 of 50Environmental & specialist awareness

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

A. Add more people as ballastB. Follow the equipment/plan limits and stop if conditions are unsafeC. Continue because the schedule is fixedD. Remove wind-speed checks

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

Question 17 of 50Working environment

Why should materials be stored securely and tidily?

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

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

Question 18 of 50Occupational health

Why can facial hair be a problem with tight-fitting respirators?

A. It makes filters last longerB. It increases oxygen levelsC. It can prevent an effective seal against the faceD. It only affects hard hats

Correct answer: C. Tight-fitting respirators rely on a good face seal; facial hair in the seal area can create leaks.

Question 19 of 50Working environment

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

A. Ignore the change if the task is almost finishedB. Stop and ask for the risk assessment or method to be reviewedC. Ask a colleague to take responsibilityD. Continue because the paperwork has already been signed

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

Question 20 of 50High risk activities

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

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

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

Question 21 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. Leave it because it improves ventilationC. Paint a warning sign on itD. 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 22 of 50High risk activities

Why are toe boards fitted to many work platforms?

A. To increase platform heightB. To replace guardrailsC. To help prevent tools and materials being kicked or falling from the edgeD. To mark smoking areas

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

Question 23 of 50Environmental & specialist awareness

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

A. To reduce fire and pollution risk and allow spill containmentB. To warm the fuelC. To make them easier to hideD. To keep them near drains

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

Question 24 of 50Occupational health

Why is asbestos dangerous?

A. It causes instant electrical shockB. Airborne fibres can cause serious diseases many years after exposureC. It always catches fireD. It only causes skin irritation

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

Question 25 of 50Environmental & specialist awareness

Why is environmental incident reporting important?

A. Only to calculate wagesB. It is unnecessary for small sitesC. It replaces spill responseD. It allows prompt control, clean-up and prevention of recurrence

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

Question 26 of 50High risk activities

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

A. Add a rope as a handrail yourselfB. Use it if you stay near the wallC. Use it only below the first liftD. Do not use it and report the defect

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

Question 27 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. Shallow excavations are always safeD. Only water is a hazard

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

Question 28 of 50Environmental & specialist awareness

What should you do with batteries and other potentially hazardous small items?

A. Place them in the designated waste/recycling streamB. Throw them into firesC. Put them in general food wasteD. Leave them outdoors

Correct answer: A. Batteries can contain hazardous materials and should follow the site's designated disposal route.

Question 29 of 50Safety

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

A. Pour water on the equipmentB. Isolate the electrical supply before touching the personC. Move the cable with a metal toolD. Pull them away with bare hands

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

Question 30 of 50Safety

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

A. To replace competence requirementsB. To record lunch breaksC. To issue wagesD. 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 31 of 50Working environment

What do green safety signs commonly identify?

A. Mandatory PPEB. Prohibited activitiesC. Safe conditions such as emergency exits or first aidD. Electrical voltage

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

Question 32 of 50Working environment

Why should near misses be reported?

A. They do not need reporting if nobody was injuredB. Only to increase paperworkC. To reduce the number of breaksD. 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 33 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 34 of 50Working environment

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

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

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

Question 35 of 50Environmental & specialist awareness

What should you check before using a lifting accessory?

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

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

Question 36 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 repair electrical toolsD. To test concrete strength

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

Question 37 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 38 of 50Working environment

What should happen to site rules after induction?

A. They should be followed throughout your time on the siteB. They can be ignored by experienced workersC. They apply only when management is presentD. They only apply on the first day

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

Question 39 of 50Occupational health

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

A. Ignore it until the next annual checkB. Increase your daily exposure slowlyC. Use the tool with one handD. Report the symptoms and seek occupational health or medical advice

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

Question 40 of 50Working environment

What should you do if a safety barrier has been moved and no longer protects an opening?

A. Wait until the end of the shiftB. Assume someone else will fix itC. Report it and make sure the area is secured before exposure continuesD. Put a warning note nearby and carry on

Correct answer: C. Missing barriers can expose people to serious falls; the area should be secured and the defect reported promptly.

Question 41 of 50High risk activities

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

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

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

Question 42 of 50Safety

Why must safety devices on tools and machinery not be bypassed?

A. They reduce productivity onlyB. They are only required during inspectionsC. They are optional for experienced workersD. They are designed to reduce exposure to dangerous movement or conditions

Correct answer: D. Defeating safety devices removes engineered protection and can expose workers to severe hazards.

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 casing has your initialsC. That the lead is as long as possibleD. 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 50Environmental & specialist awareness

What is a sensible control when refuelling plant?

A. Refuel next to an open drainB. Smoke nearby so you can see wind directionC. Leave the nozzle unattendedD. Use the designated area/process, avoid overfilling and have spill controls available

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

Question 45 of 50Environmental & specialist awareness

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

A. To provide seatingB. To improve ventilationC. To contain leaks or spillsD. To keep containers warmer

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

Question 46 of 50Safety

Why should water not be used on live electrical equipment?

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

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

Question 47 of 50Working environment

What is the main purpose of a risk assessment?

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

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

Question 48 of 50High risk activities

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

A. One unit out for every one unit upB. About one unit out for every four units upC. As vertical as possibleD. 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 49 of 50Safety

What is the safest approach to trailing electrical leads?

A. Stretch them tightly across doorwaysB. Cover them with loose cardboardC. Route or protect them so they do not create trip or damage hazardsD. Run them through standing water

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

Question 50 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 increase crane speedC. To make them look cleanD. To avoid using a lift plan

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

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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.