FREE PRACTICE TEST 48

CSCS Mock Test 48: 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 explanationsExcavation, Services And Confined Spaces

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 50Working environment

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

A. Stop or delay the task until suitable lighting is providedB. Ask a colleague to stand nearbyC. Use a phone torch and continueD. Work more slowly without reporting it

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

Question 2 of 50Safety

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

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

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

Question 3 of 50Environmental & specialist awareness

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

A. They reduce concrete strengthB. They only affect drinking water on siteC. 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 4 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. Pour water on the equipmentC. Move the cable with a metal toolD. Pull them away with bare hands

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

Question 5 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 record lunch breaksD. To replace competence requirements

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

Question 6 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. On the machine stepsC. Directly behind the counterweightD. 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 7 of 50Working environment

What should you do if you do not understand a site instruction?

A. Ignore it if you are experiencedB. Copy what another worker is doing even if their task differsC. Guess what it meansD. Ask for clarification before continuing

Correct answer: D. You should understand the instruction and the risks before starting or continuing work.

Question 8 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 creates static onlyC. It damages broomsD. 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 9 of 50Safety

Why must emergency equipment remain accessible?

A. Access is optional on small sitesB. It is used for tool storageC. 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 10 of 50High risk activities

When should work at height be avoided?

A. Only above five metresB. Never; ladders are always acceptableC. 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 11 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 will automatically stopD. They may move without knowing you are there, so stay clear and gain acknowledgement before approaching

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

Question 12 of 50Environmental & specialist awareness

Why are exclusion zones used around overhead lifting?

A. To create a rest areaB. To improve radio receptionC. To prevent people entering areas where loads or objects could fall or swingD. To keep vehicles clean

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

Question 13 of 50Working environment

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

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

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

Question 14 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 decide who can take breaksC. To measure productivity onlyD. To replace risk controls

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

Question 15 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. Burned on siteD. Mixed into general rubble

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

Question 16 of 50Occupational health

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

A. To check that the specific mask can seal adequately to the wearerB. To replace trainingC. To test the colour of the filterD. To measure hearing protection

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

Question 17 of 50Occupational health

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

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

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

Question 18 of 50Safety

Why should emergency stop controls be kept unobstructed?

A. They are only decorativeB. They may need to be activated immediatelyC. They increase productionD. They prevent tools being cleaned

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

Question 19 of 50Occupational health

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

A. Put the material in a normal waste skipB. Sweep up the dustC. Keep working but wear glovesD. 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 20 of 50High risk activities

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

A. Removing edge protection for accessB. Working fasterC. Collective protection such as suitable platforms and guardrailsD. Relying only on a worker's balance

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

Question 21 of 50Environmental & specialist awareness

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

A. Cover it with soil and leave itB. Ignore small spillsC. Wash it into a surface-water drainD. 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 22 of 50Environmental & specialist awareness

What should happen to concrete washout water?

A. It is harmless once dilutedB. It should be poured into the nearest drainC. It should be spread across soilD. 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 23 of 50High risk activities

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

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

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

Question 24 of 50Environmental & specialist awareness

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

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

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

Question 25 of 50Safety

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

A. To increase gas pressureB. To make labels easier to read onlyC. To keep them warmerD. 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 26 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. Remove the signsC. Follow them into the zoneD. Ignore them because they accepted the risk

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

Question 27 of 50Safety

Before changing a blade or accessory on a power tool, what should you normally do?

A. Ask a colleague to hold the bladeB. Keep the trigger pressedC. Remove the guard permanentlyD. Isolate the tool from its power source

Correct answer: D. Isolation prevents accidental start-up while hands are near the cutting or moving parts.

Question 28 of 50Safety

What should you do if you find a fire door wedged open when it should be closed?

A. Leave it because it improves ventilationB. Lock the doorC. Paint a warning sign on itD. Remove the obstruction if safe and report the issue

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

Question 29 of 50Environmental & specialist awareness

Why should drains sometimes be covered or protected during spill-risk activities?

A. To increase drainage speedB. To prevent contaminants entering the drainage systemC. To store tools on topD. To stop rain completely

Correct answer: B. Drain protection is an important part of pollution prevention.

Question 30 of 50Safety

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

A. Ignore it if it evaporates quicklyB. Cover it with paperC. Wash it into a drainD. Control ignition sources, follow the spill procedure and report it

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

Question 31 of 50Occupational health

Why should contaminated work clothing not be taken into clean eating areas?

A. It is only a company image issueB. It makes the room warmerC. It damages mobile phonesD. It can spread hazardous dusts or substances

Correct answer: D. Segregating contaminated clothing helps prevent secondary exposure by ingestion or transfer.

Question 32 of 50High risk activities

What is a major hazard of fragile roofs?

A. A person can fall through the roof surfaceB. They always contain asbestosC. They cannot get wetD. They attract lightning

Correct answer: A. Fragile materials may not support a person's weight and require specific access and fall controls.

Question 33 of 50Occupational health

What is a common early symptom of hand-arm vibration syndrome?

A. Temporary hair lossB. Improved grip strengthC. Better circulationD. Tingling or numbness in the fingers

Correct answer: D. Tingling, numbness and blanching of the fingers can be signs of vibration-related damage.

Question 34 of 50Working environment

Why should emergency routes and exits never be blocked?

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

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

Question 35 of 50Occupational health

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

A. Use effective extraction or water suppression at sourceB. Open a nearby door onlyC. Remove eye protectionD. Work faster to reduce exposure time

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

Question 36 of 50Occupational health

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

A. It is unrelated to safetyB. Support and adjustments may help prevent errors and protect wellbeingC. It automatically leads to dismissalD. Only managers can raise such concerns

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

Question 37 of 50Working environment

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

A. A safe escape routeB. First-aid equipmentC. A prohibition or something you must not doD. A mandatory action

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

Question 38 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 39 of 50Working environment

What should you do with an access route that has become obstructed by materials?

A. Climb over the materialsB. Arrange for the obstruction to be cleared and keep the route usableC. Leave it until the next deliveryD. Use the vehicle route instead

Correct answer: B. Access and escape routes should be kept clear and usable.

Question 40 of 50Working environment

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

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

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

Question 41 of 50High risk activities

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

A. Only a torchB. A colleague outside with no instructionsC. A suitable risk assessment, permit/control system and emergency/rescue arrangementsD. A mobile phone

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

Question 42 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. Try it once to gain experienceC. Ask another untrained worker to helpD. Explain that you are not competent or authorised and seek instruction

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

Question 43 of 50Working environment

What is a method statement mainly used for?

A. Listing employee salariesB. Setting out a safe sequence and method for carrying out workC. Ordering materials from suppliersD. Recording holiday entitlement

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

Question 44 of 50Safety

Why should water not be used on live electrical equipment?

A. It can conduct electricity and increase shock riskB. It always damages concreteC. It makes alarms louderD. It creates asbestos

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

Question 45 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 46 of 50Environmental & specialist awareness

Why is environmental incident reporting important?

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

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

Question 47 of 50High risk activities

Who should operate an excavator, telehandler or similar plant?

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

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

Question 48 of 50Occupational health

What is a sensible action if you feel unwell from heat while working?

A. Wear extra layersB. Drink only energy drinksC. Stop, move to a cooler area, hydrate and report symptomsD. Keep working until the task is complete

Correct answer: C. Heat illness can worsen quickly; early cooling, hydration and reporting are important.

Question 49 of 50Environmental & specialist awareness

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

A. To keep containers warmerB. To improve ventilationC. To contain leaks or spillsD. To provide seating

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

Question 50 of 50High risk activities

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

A. Suitable support, battering or another engineered protective systemB. A warning sign onlyC. High-visibility clothing onlyD. A plank across the top

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

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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.