FREE PRACTICE TEST 03

CSCS Mock Test 03: 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 explanationsDust, Noise And Occupational Health

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 50Environmental & specialist awareness

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

A. Move the nest yourselfB. Stop or follow the ecological controls and seek advice before disturbing themC. Use louder machineryD. Ignore it if the programme is busy

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

Question 2 of 50Working environment

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

A. Only read the emergency noticeboardB. Start work immediately if you know the tradeC. 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 3 of 50Environmental & specialist awareness

Why should chemical containers remain correctly labelled?

A. Unlabelled containers are saferB. Labels are only for delivery driversC. It increases shelf lifeD. So users know the contents, hazards and handling requirements

Correct answer: D. Correct labelling is essential for identification, safe use and emergency response.

Question 4 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 5 of 50Environmental & specialist awareness

What is a good way to reduce dust leaving a construction site?

A. Use source controls, damping/extraction and keep routes cleanB. Increase vehicle speedsC. Sweep dry dust into the roadD. Remove wheel-wash facilities

Correct answer: A. Source control and good housekeeping reduce airborne dust and off-site nuisance.

Question 6 of 50Occupational health

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

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

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

Question 7 of 50Environmental & specialist awareness

Why should plant engines not be left idling unnecessarily?

A. It wastes fuel and increases emissions and noiseB. It prevents oil leaksC. It improves air qualityD. It makes batteries last longer

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

Question 8 of 50Working environment

What do green safety signs commonly identify?

A. Safe conditions such as emergency exits or first aidB. Prohibited activitiesC. Mandatory PPED. Electrical voltage

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

Question 9 of 50Safety

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

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

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

Question 10 of 50Environmental & specialist awareness

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

A. Smell the contentsB. Do not open or move it unnecessarily; report it and follow site proceduresC. Use it as a waste binD. Pour it into another container

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

Question 11 of 50Working environment

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

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

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

Question 12 of 50Working environment

What is a method statement mainly used for?

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

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

Question 13 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. Directly behind the counterweightC. On the machine stepsD. Between the machine and a fixed wall

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

Question 14 of 50Environmental & specialist awareness

What is the purpose of a spill kit?

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

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

Question 15 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. Reverse to where you last saw themC. Stop until communication is re-establishedD. Continue slowly

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

Question 16 of 50High risk activities

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

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

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

Question 17 of 50Occupational health

How can outdoor workers reduce harm from strong sunlight?

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

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

Question 18 of 50Occupational health

How can vibration exposure from power tools be reduced?

A. Remove tool guardsB. Grip the tool as tightly as possibleC. Use heavier gloves instead of managing exposureD. Use suitable low-vibration tools, maintain them and limit exposure time

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

Question 19 of 50Safety

Why should water not be used on live electrical equipment?

A. It can conduct electricity and increase shock riskB. It makes alarms louderC. It creates asbestosD. It always damages concrete

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

Question 20 of 50Environmental & specialist awareness

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

A. They only affect drinking water on siteB. They reduce concrete strengthC. They always block toiletsD. They may flow directly to watercourses and cause pollution

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

Question 21 of 50High risk activities

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

A. A suitable risk assessment, permit/control system and emergency/rescue arrangementsB. A mobile phoneC. A colleague outside with no instructionsD. Only a torch

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

Question 22 of 50Working environment

Why is clear communication important when several trades work in the same area?

A. It removes the need for permitsB. It means PPE is no longer requiredC. It allows each trade to ignore the othersD. It helps coordinate hazards and prevents conflicting activities

Correct answer: D. Coordination reduces risks created by simultaneous or overlapping work activities.

Question 23 of 50Working environment

What should you do if a floor opening is uncovered?

A. Mark it with paint onlyB. Step around it and say nothingC. Prevent access and report it so suitable protection can be restoredD. Cover it with loose cardboard

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

Question 24 of 50Occupational health

What can repeated skin contact with wet cement cause?

A. Dermatitis and chemical burnsB. Vibration white fingerC. Heat exhaustion onlyD. Hearing loss

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

Question 25 of 50Environmental & specialist awareness

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

A. Broken into smaller pieces to save spaceB. Using the specified hazardous-waste controls and authorised disposal routeC. Mixed into general rubbleD. Burned on site

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

Question 26 of 50Occupational health

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

A. Safety Data SheetB. Delivery driver's licenceC. Site map onlyD. Timesheet

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

Question 27 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. Do it only if no supervisor is watchingB. Explain that you are not competent or authorised and seek instructionC. Try it once to gain experienceD. Ask another untrained worker to help

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

Question 28 of 50Environmental & specialist awareness

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

A. To improve ventilationB. To contain leaks or spillsC. To provide seatingD. To keep containers warmer

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

Question 29 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 are waterproofD. They remove the need for electrical inspections

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

Question 30 of 50Occupational health

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

A. Ignore the sign if you are there brieflyB. Use headphones insteadC. Wear the specified hearing protectionD. Only wear protection when machinery stops

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

Question 31 of 50Safety

What is the safest approach to trailing electrical leads?

A. Run them through standing waterB. Cover them with loose cardboardC. Stretch them tightly across doorwaysD. Route or protect them so they do not create trip or damage hazards

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

Question 32 of 50Working environment

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

A. A mandatory actionB. A safe escape routeC. A prohibition or something you must not doD. First-aid equipment

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

Question 33 of 50High risk activities

What should be provided where an excavation is at risk of collapse?

A. A warning sign onlyB. A plank across the topC. Suitable support, battering or another engineered protective systemD. High-visibility clothing only

Correct answer: C. Excavation sides need appropriate support or safe shaping where collapse risk exists.

Question 34 of 50Safety

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

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

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

Question 35 of 50Environmental & specialist awareness

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

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

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

Question 36 of 50Safety

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

A. Pull them away with bare handsB. Pour water on the equipmentC. Move the cable with a metal toolD. Isolate the electrical supply before touching the person

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

Question 37 of 50Safety

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

A. Stop using it, isolate it from use and report the defectB. Ask a colleague to hold the cableC. Wrap the damaged area with ordinary tape and continueD. Use it only in dry weather

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

Question 38 of 50High risk activities

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

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

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

Question 39 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 40 of 50Occupational health

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

A. It makes filters last longerB. It only affects hard hatsC. It increases oxygen levelsD. It can prevent an effective seal against the face

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

Question 41 of 50High risk activities

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

A. To record the welder's wagesB. To confirm specified fire and safety precautions are in placeC. To allow smoking in the work areaD. To replace fire extinguishers

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

Question 42 of 50Occupational health

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

A. Assess the load, route and whether mechanical help or assistance is neededB. Lift quickly before you get tiredC. Carry it above shoulder heightD. Twist your back to get momentum

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

Question 43 of 50Occupational health

Why should hearing protection fit correctly?

A. It changes the colour of the ear defendersB. It removes the need to control noise at sourceC. Poor fit can greatly reduce the protection providedD. It makes tools run more quietly

Correct answer: C. Hearing protection only works effectively when selected, fitted and worn correctly.

Question 44 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. Do not use it and report the defectD. Use it only below the first lift

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

Question 45 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 46 of 50Working environment

Why are exclusion zones set up around certain activities?

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

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

Question 47 of 50Occupational health

Why is health surveillance used for some construction hazards?

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

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

Question 48 of 50High risk activities

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

A. Any worker nearbyB. The newest workerC. 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 49 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 tools are issuedD. It is where deliveries are signed for

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

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.