CSCS Mock Exam 6 - Free CSCS Test Online 2026 Questions

CSCS Mock Exam 6: Another full CSCS test online with 50 multiple-choice questions and answers, updated for the 2026 test. Like all of our full CSCS practice tests, the pass mark is 90%; that’s 45 out of 50. There’s no time limit set, and you will get an instant pass/fail grade at the end.

Note: If a question requires multiple answers, you must choose all correct answers to get a point for that question. If you choose 1 correct and 1 incorrect answer, that question will be marked as incorrect.

1. While excavating, the soil gives off an unusual odour. What could this indicate?

The ground contains a large amount of clay

The area has been dug previously

The land may be contaminated

The soil was once used for agriculture

Question 1 of 50

2. Why are accident investigations carried out?

To identify everyone involved

To support the administration of insurance claims

To establish the cause and help prevent similar incidents

To decide who is responsible for the incident

Question 2 of 50

3. What is the most effective way to reduce exposure to dust when using a power tool?

Stand downwind of the dust cloud

Prevent dust from becoming airborne by using suitable controls

Complete the task as quickly as possible

Carry out the work only in wet weather

Question 3 of 50

4. What can be worn underneath a safety helmet to provide extra protection from cold weather?

A baseball-style cap

A liner or accessory approved by the helmet manufacturer

A hood attached to a jumper or sweatshirt

A woolen beanie hat

Question 4 of 50

5. Which activity is most likely to contribute to air pollution on a construction site?

Operating diesel-powered machinery or vehicles

Surface water run-off

Fuel spills

Excessive noise levels

Question 5 of 50

6. What is the correct way to access the working platform of a mobile access tower?

Climb the outside frame of the tower

Lean a separate ladder against the tower and climb that

Use the internal ladder provided within the tower structure

Climb the outside diagonal braces

Question 6 of 50

7. A strong smell similar to rotten eggs inside a confined space is often a sign of which gas?

Methane

Carbon dioxide

Hydrogen sulphide

Oxygen

Question 7 of 50

8. At what angle should a leaning ladder be positioned for safe use?

75°

85°

45°

60°

Question 8 of 50

9. If workers ignore safety instructions for handling hazardous substances, what is the most likely outcome?

Reduced fitness levels

Ill health or injury

Improved fitness levels

Better overall health

Question 9 of 50

10. What does this symbol mean?

compressed gas

Compressed Gas

Explosive

Flammable

Oxidising

Question 10 of 50

11. What health risk do workers face if they have to use a vibrating tool on a regular basis?

Heart disease

Dermatitis

Hand-arm vibration syndrome (HAVS)

Lung cancer

Question 11 of 50

12. Which statement about respiratory protective equipment (RPE) is correct?

The cost should be shared between employer and employee

Workers are expected to buy their own RPE

Employers must provide suitable RPE free of charge when it is needed for work

Employers can charge workers for RPE when it is required

Question 12 of 50

13. You have been issued with a basic dust mask, but the task involves exposure to hazardous fumes. What should you do?

Wear two dust masks together to improve protection

Start the task without a mask and take regular fresh-air breaks

Wear the dust mask and complete the work as quickly as possible

Do not begin the task until suitable respiratory protective equipment (RPE) has been provided

Question 13 of 50

14. You are carrying out a noisy task and realise it cannot be completed within normal working hours. What should you do first?

Inform local residents yourself before restarting work

Check your hearing protection and continue

Continue working until the task is finished

Stop and notify site management so the impact can be assessed

Question 14 of 50

15. A scaffold guardrail needs to be removed to allow work to take place. If you are not a trained scaffolder, what should you do?

Remove it and reinstall it once the task is finished

Remove it and replace it before leaving site

Do not remove it. Only a competent scaffolder should remove and reinstate guardrails

Leave the removal to a scaffolder, but replace it yourself afterwards

Question 15 of 50

16. A worker starts feeling unwell after using a new chemical product. What is the safest course of action?

Record it in an incident log and carry on working

Finish the task and mention it later

Stop using the substance and report the issue to a supervisor immediately

Ignore it because some products can make you feel unwell

Question 16 of 50

17. Who is permitted to enter a confined space?

People who have the required training, competence, and authorisation

Site managers and supervisors only

Anyone who has completed an apprenticeship

Only licensed machine operators

Question 17 of 50

18. You cut your finger and the bleeding does not stop. What should you do?

Inform your colleagues and take a break

Cover the wound and carry on working

Contact a first aider or seek medical assistance

Clean the wound and continue working

Question 18 of 50

19. During drilling, grinding, sanding or cutting activities, where are dust concentrations likely to be highest?

Outside when there is little wind

Outside during windy conditions

In a large open indoor area

In a small enclosed room

Question 19 of 50

20. Materials are being stored above toe-board height on a scaffold. How should people below be protected from falling objects?

Install brick guards or suitable debris netting

Stop work whenever someone approaches

Secure the materials using string

Warn people verbally when they walk underneath

Question 20 of 50

21. Which statement best describes the effects of repeated exposure to low levels of dust?

Dust exposure at low levels is harmless

The damage can develop gradually over a long period of time

It strengthens the body's natural resistance to dust

Any health effects will be noticed immediately

Question 21 of 50

22. What should you do if a load is too heavy for you to move on your own, there are no colleagues around to help you, and the load cannot be divided into smaller parts?

Use a fork-lift truck even though you’re not trained to use one

Drag the load on the ground

Place the load on your shoulders and carry it quickly to avoid injury

Do not attempt to move the load unless you find a safe way of moving it

Question 22 of 50

23. Which two factors can interfere with the seal of respiratory protective equipment (RPE)? (Select two answers)

Cosmetic make-up

Wearing a hearing aid

Scars or skin irregularities where the mask seals against the face

Facial hair such as beards or heavy stubble

Earrings

Question 23 of 50

24. Which two statements about roof work are correct? (Select two answers)

Asbestos cement and fibre-cement roof sheets are unlikely to be fragile

Roof work should not take place without suitable fall protection measures

Wired glass roof panels may still be fragile

Fragile roof areas are always easy to identify

It is always safe to walk close to roof supports

Question 24 of 50

25. Which fire extinguisher below carbon dioxide?

fire extinguishers

Question 25 of 50

26. What is the safest way to reposition a mobile access tower?

Pull it manually from both the top and bottom

Move it manually by pushing from the base only

Tow it with a vehicle using a rope attached to the top

Tow it using a site vehicle and a rope attached to the base

Question 26 of 50

27. In what situation is an employer required to provide personal protective equipment (PPE)?

Only when the employee pays for it

Only when it is specified in the employment contract

Whenever PPE is needed to reduce workplace risk

Twice each year

Question 27 of 50

28. The site first-aid kit is missing essential supplies. What should you do?

Ignore it because someone else will deal with it

Bring your own medical supplies to work

Find out who has been using the contents

Report it to the person responsible for maintaining the first-aid kit

Question 28 of 50

29. Which two filter categories are commonly used in respiratory protective equipment (RPE)? (Select two answers)

Particle or dust filters

Gas and vapour filters

Aroma filters

Moisture filters

Sound filters

Question 29 of 50

30. What is considered a safe voltage when using electrical equipment on a construction site?

240 volts

115 volts

110 volts

220 volts

Question 30 of 50

31. During excavation work, you uncover coloured marker tape. What does this usually indicate?

Human remains may be buried nearby

Additional trench supports are required

The ground is contaminated and RPE must be worn

An underground service is present and excavation should continue with caution

Question 31 of 50

32. You accidentally cut your finger while working on site. What is the correct course of action?

Clean the wound and inform your supervisor later

Report the injury and seek first aid immediately

Wait until the end of the day before reporting it

Wash the cut and continue working if it seems minor

Question 32 of 50

33. How many people should be on a ladder at any one time?

Up to three people if the ladder is long enough

One person only

One person on each section of an extension ladder

No more than two people

Question 33 of 50

34. Where should you look for information about site emergency procedures? (Select two answers)

The site induction

The local hospital

The health and safety file

Site noticeboards

The Health and Safety Executive (HSE) website

Question 34 of 50

35. A worker has collapsed inside a deep inspection chamber. What should you do first?

Arrange to be lowered into the chamber on a rope

Enter the chamber and provide first aid

Raise the alarm and remain outside the chamber

Attempt a rescue while someone looks for your supervisor

Question 35 of 50

36. Why is reducing energy consumption important? (Select three answers)

It conserves natural resources used to produce energy

It helps reduce the environmental impact of burning fossil fuels

It helps lower fuel and energy costs on site

It allows energy suppliers to charge more for services

It increases energy demand elsewhere

Question 36 of 50

37. A particle-filter respirator is designed to protect against which of the following?

Airborne dust, particles, and fibres

Harmful gases

Atmospheres with insufficient oxygen

Chemical vapours

Question 37 of 50

38. What should you do if an emergency occurs on site?

Follow the site's emergency procedures

Leave through the nearest exit and go home

Contact the Health and Safety Executive (HSE) for guidance

Collect your belongings and leave the site

Question 38 of 50

39. Which of the following may suggest that employees are under stress?

Long-term staff retention

Increased productivity

Fewer workplace accidents

High staff turnover

Question 39 of 50

40. What hazard does safety footwear with a protective midsole help guard against?

Ankle injuries caused by loss of grip

Sharp objects such as nails penetrating the sole of the boot

Blisters caused by damp conditions

Chemical spills affecting the underside of the foot

Question 40 of 50

41. A nearby worker is using a petrol-powered cut-off saw to cut concrete blocks. Which three hazards could affect people working close by? (Select three answers)

Airborne dust generated during the cutting process

Excessive noise levels

Vibration white finger

Flying fragments from the material being cut

Occupational dermatitis

Question 41 of 50

42. You saw a scaffold collapse on site. If asked about the incident, what information should you provide?

Your opinion on who should be held accountable

Very little information to avoid getting others into trouble

Very limited information because you are not a scaffold specialist

A detailed account of exactly what you witnessed

Question 42 of 50

43. When should you report an injury caused by a workplace accident?

Before starting work the following day

At the end of your shift

As soon as possible after the incident

Only if you need time off work

Question 43 of 50

44. You have been injured at work and the details are entered into the accident book. What requirement applies to this record?

It should be destroyed when the work is finished

It should be stored where all employees can access it

It must be kept confidential and handled in accordance with data protection laws

It should be forwarded to the company's insurer once the project is complete

Question 44 of 50

45. What could happen if oxygen levels fall below 8% in a confined space?

You could lose consciousness

You may become dehydrated

The chance of fire or explosion increases

Hearing may be affected

Question 45 of 50

46. You have been asked to locate underground services using a cable avoidance tool (CAT). Although you have used similar equipment before, you have never been shown how to operate this particular model. What should you do?

Tell your supervisor that you have not been trained to use this specific model

Proceed without using the CAT scanner

Ask a colleague for a quick demonstration

Read the instruction manual and begin work

Question 46 of 50

47. What is one of the most effective ways to control dust on a construction site?

Apply fine water sprays to damp down dusty areas

Use powered equipment only

Limit the use of wheel-washing facilities

Cover every area of the site

Question 47 of 50

48. Which item of personal protective equipment (PPE) should be worn where there is a risk of falling objects?