I85PREP
⌘ K
Carpentry NC II study materials
Carpentry NC II study resources

Carpentry NC II practice questions

One question at a time. Build your Carpentry NC II understanding.

First 50 of 200 questions. Each one lists the choices, the correct answer, and an explanation. The checker at the top of this page saves progress in this browser when it is available.

Continue in the practice tool above to load more questions, 50 at a time.

Question 1Workplace communication and documentation

On a Philippine construction site, a carpenter receives a written instruction from the foreman. Which document typically authorizes a variation to the agreed scope of works before the carpenter proceeds?

  1. A signed variation order from the client or authorized representative Correct answer.
  2. An unsigned sketch handed over during the toolbox talk
  3. A page from the project brochure
  4. A verbal instruction relayed by a co-worker

Explanation

A variation order is the formal written instruction that authorizes a change in scope, cost, or schedule, and it must be signed by an authorized party. Carpenters should not act on scope changes without this documentation because unsigned or verbal instructions cannot be verified or costed.

Question 2Workplace communication and documentation

A carpenter notices that a delivery of timber has a different grade from what the purchase order specified. What is the most appropriate first action?

  1. Use the timber and note it later in the daily log
  2. Sign the delivery receipt as complete to avoid delay
  3. Reject the delivery without informing anyone
  4. Report the discrepancy to the supervisor and record it on the delivery receipt Correct answer.

Explanation

Discrepancies between delivered materials and the purchase order must be documented and raised with the supervisor immediately so that replacement or adjustment can be arranged. Signing as complete or using substandard material without reporting removes the evidence needed for a claim.

Question 3Workplace communication and documentation

Which information belongs on a material requisition slip submitted by a carpenter to the storekeeper?

  1. The names of competing suppliers
  2. The carpenter's home address and contact number
  3. The client's bank account details
  4. The quantity, description, and required date of the materials Correct answer.

Explanation

A requisition slip must identify what is needed, how much, and when, so the storekeeper can release or procure the correct items. Personal or supplier data unrelated to the request does not belong on the form.

Question 4Workplace communication and documentation

During a toolbox talk, the foreman gives verbal instructions about formwork stripping. What is the best way for the carpenter to confirm understanding?

  1. Nod and walk away
  2. Write the instructions from memory at the end of the week
  3. Ask a co-worker to explain later
  4. Repeat the key steps back to the foreman in their own words Correct answer.

Explanation

Repeating instructions back, often called a feedback or paraphrase check, confirms that the message was received correctly. Delaying confirmation or relying on memory risks errors that can affect safety and quality.

Question 5Workplace communication and documentation

What is the primary purpose of a daily site log kept by a carpentry crew?

  1. To advertise the company's services
  2. To store personal contact numbers of the crew
  3. To list the prices of tools in the market
  4. To record work performed, manpower, weather, and events that may affect the works Correct answer.

Explanation

A daily log is a contemporaneous record of activities, resources, weather, and incidents that can support progress claims and delay analysis. It is not a marketing, personal, or procurement document.

Question 6Workplace communication and documentation

Which of the following is the clearest way for a carpenter to write a note about a safety hazard observed on site?

  1. Loose scaffold plank at grid C-4, level 2, east side, observed 8:30 a.m. Correct answer.
  2. As discussed
  3. It's bad again
  4. Something wrong over there

Explanation

A useful hazard note states what the hazard is, its exact location, and when it was observed so it can be acted on. Vague references force the reader to guess and may delay corrective action.

Question 7Workplace communication and documentation

A carpenter must document that a wall frame is plumb within the required tolerance. Which record is most appropriate?

  1. A note on the back of a delivery receipt
  2. A verbal statement at the end of the shift
  3. A text message to a friend
  4. An inspection and test record signed by the carpenter and inspector Correct answer.

Explanation

Quality checks such as plumbness should be recorded on an inspection and test record with measured results and signatures so compliance can be demonstrated. Informal notes or verbal statements do not provide verifiable evidence.

Question 8Workplace communication and documentation

In a progress report, which wording best communicates actual carpentry work completed for the week?

  1. Almost finished everything
  2. We did a lot of work this week
  3. Installed 24 lineal metres of wall studs at level 1 and fixed 12 door jambs, both per approved shop drawings Correct answer.
  4. Progress is good as usual

Explanation

Good progress reporting uses measurable quantities, locations, and references to approved documents. Vague statements cannot be verified or used for progress claims.

Question 9Workplace communication and documentation

A carpenter finds that a client's representative has given an instruction that conflicts with the approved structural drawings. What should the carpenter do?

  1. Follow the instruction immediately to avoid conflict
  2. Stop and refer the conflict to the site engineer or supervisor for clarification Correct answer.
  3. Ignore both documents
  4. Alter the drawings personally

Explanation

Conflicting instructions must be escalated to the responsible engineer or supervisor so that a documented resolution can be issued. Proceeding without resolution risks unsafe or non-conforming work.

Question 10Workplace communication and documentation

Which element is essential in a written request for information (RFI) raised by a carpentry crew about a drawing detail?

  1. A list of unrelated site complaints
  2. A long history of the carpenter's career
  3. A clear reference to the drawing number, the specific question, and the impact on the schedule Correct answer.
  4. An offer to redesign the structure

Explanation

An RFI must point to the exact drawing or specification, state the question precisely, and indicate the impact so the answer can be targeted and timely. Unrelated content delays response.

Question 11Workplace communication and documentation

A carpenter needs to confirm that a supervisor received an urgent written report about a damaged truss. Which communication method provides the best evidence of receipt?

  1. A verbal message left with a passer-by
  2. A shout across the site
  3. An email or message with read receipt or acknowledgement signature Correct answer.
  4. A note pinned on a general notice board

Explanation

Evidence of receipt is best provided by a traceable channel such as email with a read receipt, or a signed acknowledgement. Untraceable methods cannot prove the message reached the recipient.

Question 12Workplace communication and documentation

When completing a non-conformance report for a misaligned door frame, which detail most strengthens the report?

  1. The name of the carpenter's favourite tool
  2. A measured deviation, its location, and a photograph reference Correct answer.
  3. The weather forecast for the following week
  4. A general statement that the work looks wrong

Explanation

A non-conformance report should describe the defect objectively with measurements, location, and supporting evidence such as photos. This allows corrective action to be planned and verified.

Question 13Workplace communication and documentation

Two carpenters disagree about whose measurement should be used for setting out a partition. What is the most professional way to resolve it?

  1. Argue until one gives up
  2. Ask the client to choose a number
  3. Use the larger measurement without discussion
  4. Refer to the approved setting-out drawing and verify with a joint re-measurement Correct answer.

Explanation

Disputes over dimensions should be settled by referring to the approved drawing and verifying with a joint measurement. This produces an objective, documented basis for the work.

Question 14Workplace communication and documentation

Which practice best protects the confidentiality of project drawings and client information handled by a carpentry crew?

  1. Leaving drawings unattended in public areas
  2. Storing documents in a controlled site office and sharing only with authorized personnel Correct answer.
  3. Sharing drawing files on public social media
  4. Posting progress photos showing client details

Explanation

Confidential project information should be kept in a controlled location and shared only with people who need it for the work. Public posting or careless handling can expose client data.

Question 15Workplace communication and documentation

A carpenter receives a handwritten change note from a co-worker claiming it comes from the engineer. What is the correct course of action?

  1. Verify the instruction with the engineer or supervisor and obtain proper documentation Correct answer.
  2. Copy the note and proceed on two different wall layouts
  3. Discard the note without informing anyone
  4. Proceed because a co-worker is trustworthy

Explanation

Instructions affecting the works must be verified with the responsible authority and documented before action. Relying on unverified notes risks errors and disputes.

Question 16Workplace communication and documentation

Which statement best describes the role of a shop drawing in workplace communication for carpenters?

  1. It is a marketing sketch for the client
  2. It replaces all verbal instructions permanently
  3. It records only the carpenter's wages
  4. It translates design intent into buildable details that the crew can follow and check against Correct answer.

Explanation

Shop drawings convert design intent into detailed, buildable information such as dimensions, joints, and fixing methods, which the crew uses as a reference during construction. They do not replace all communication or record wages.

Question 17Workplace communication and documentation

A carpenter's daily log entry states: 'Rain from 10:00 to 14:00; external formwork stopped; crew redeployed to internal wall framing.' Which purpose does this entry best serve?

  1. Advertising the crew's flexibility
  2. Recording a delay event and the mitigation taken for later claims analysis Correct answer.
  3. Recording the price of formwork timber
  4. Listing the crew's personal schedules

Explanation

A time-stamped record of weather disruption and the mitigation taken provides evidence for delay analysis and possible time claims. It is a factual record, not promotional or pricing information.

Question 18Workplace communication and documentation

A subcontractor's carpenter submits a progress claim that includes work not yet inspected. What documentation should the main contractor require before certifying payment?

  1. A copy of the carpenter's identification card
  2. A verbal assurance from the carpenter
  3. A list of tools used on site
  4. Signed inspection records and measurement sheets supporting the claimed quantities Correct answer.

Explanation

Payment certification should rely on verified inspection records and measured quantities that prove the work was completed to the required standard. Verbal assurances or unrelated documents do not substantiate a claim.

Question 19Workplace communication and documentation

A carpenter must report a near-miss where a stack of plywood nearly toppled. Which report content best supports future prevention?

  1. A general remark that the site is dangerous
  2. A statement that nothing happened so no action is needed
  3. Only the names of the people nearby
  4. A description of the sequence of events, the stacking condition, and a recommended control Correct answer.

Explanation

A near-miss report should describe what happened, the conditions that led to it, and a proposed control so the risk can be eliminated before an actual incident occurs. Omitting the sequence and cause prevents learning.

Question 20Workplace communication and documentation

In a handover meeting, the carpenter is asked to explain why a section of ceiling framing differs from the drawing. Which response demonstrates proper documentation practice?

  1. Say the drawing was probably wrong
  2. Present the approved variation order or RFI response that authorized the change Correct answer.
  3. State that the change was agreed verbally and leave it at that
  4. Refuse to discuss the matter

Explanation

Any deviation from the drawing should be supported by an approved variation order or a documented RFI response that authorized it. Relying on verbal agreement or speculation leaves the change unsubstantiated.

Question 21Occupational health and safety and environmental compliance

On a carpentry site, which personal protective equipment is specifically required when operating a circular saw to protect against flying wood chips and sawdust?

  1. Hearing protection earmuffs
  2. Safety goggles or a face shield Correct answer.
  3. Steel-toed safety boots
  4. A high-visibility vest

Explanation

Cutting wood with a circular saw throws chips and fine dust toward the operator's face, so eye and face protection is the primary control for that hazard. Boots, vests, and earmuffs address different hazards such as foot impact, visibility, and noise.

Question 22Occupational health and safety and environmental compliance

Before using a portable power planer, a carpenter should inspect the tool. Which check most directly prevents electric shock?

  1. Confirming the guard returns freely
  2. Verifying the blade depth setting
  3. Checking the condition of the power cord and plug for cuts or exposed wires Correct answer.
  4. Wiping sawdust off the tool housing

Explanation

Damaged insulation, cracked plugs, and exposed conductors are the main pathway for electric shock from portable tools. The guard and blade depth relate to mechanical cutting hazards, and cleaning is housekeeping rather than an electrical safeguard.

Question 23Occupational health and safety and environmental compliance

Which practice best prevents a ladder from slipping while a carpenter works at height on a smooth concrete floor?

  1. Securing the ladder at the top and footing it on a non-slip base Correct answer.
  2. Standing on the top rung to reduce reach
  3. Leaning the ladder at a very steep angle
  4. Having a co-worker hold the base only

Explanation

Tying off the ladder at the top and using a non-slip footing addresses both the top and base movement that cause falls. A steep angle, hand-holding alone, or standing on the top rung all increase the chance of the ladder sliding or tipping.

Question 24Occupational health and safety and environmental compliance

When manually lifting a heavy plywood sheet, which technique reduces the risk of back injury?

  1. Bending at the waist and twisting to swing the load
  2. Keeping the load away from the body for balance
  3. Bending the knees, keeping the back straight, and holding the load close Correct answer.
  4. Lifting with a jerking motion to gain momentum

Explanation

Bending the knees and keeping the load close reduces the lever arm on the lower back and lets the leg muscles do the work. Twisting, jerking, and holding the load far from the body all increase spinal loading.

Question 25Occupational health and safety and environmental compliance

A carpenter needs to dispose of offcuts, sawdust, and empty solvent containers after a fit-out job. Which approach complies with environmental requirements?

  1. Segregating waste by type and sending solvent containers to an approved disposal facility Correct answer.
  2. Burning untreated offcuts on site to reduce volume
  3. Burying sawdust in a corner of the site
  4. Pouring leftover solvent into the drainage channel

Explanation

Waste segregation keeps recyclable timber separate from hazardous items, and solvent containers must go to an approved facility because of their chemical content. Burning, burying, or draining chemicals causes air, soil, and water pollution and is generally prohibited.

Question 26Occupational health and safety and environmental compliance

Which action is the correct first response when a co-worker suffers a minor cut from a hand tool?

  1. Apply a tourniquet immediately
  2. Stop the bleeding with pressure and clean and dress the wound Correct answer.
  3. Give the worker painkillers and continue work
  4. Send the worker home without treatment

Explanation

For a minor cut, controlling bleeding with direct pressure and cleaning and dressing the wound prevents infection and further blood loss. A tourniquet is reserved for severe, uncontrolled bleeding, and the incident should still be recorded.

Question 27Occupational health and safety and environmental compliance

Which sign color and shape is used on a construction site to indicate a mandatory action such as wearing a hard hat?

  1. A yellow diamond with a black symbol
  2. A green rectangle with a white symbol
  3. A blue circle with a white symbol Correct answer.
  4. A red triangle with a black symbol

Explanation

Safety signs follow a standard color code: blue circles indicate mandatory actions, red triangles warn of hazards, yellow is used for caution, and green marks safe conditions or escape routes. Recognizing this code lets workers act correctly without reading text.

Question 28Occupational health and safety and environmental compliance

Why should a carpenter avoid wearing loose sleeves or dangling jewelry when operating a bench saw?

  1. They reduce the brightness of the work light
  2. They make the operator look unprofessional
  3. They interfere with the saw's electrical grounding
  4. They can snag on rotating parts and pull the operator into the blade Correct answer.

Explanation

Loose clothing and jewelry can be caught by rotating or moving machine parts and drag the operator's body toward the cutting edge. This entanglement hazard is why close-fitting clothing and removed jewelry are required around machinery.

Question 29Occupational health and safety and environmental compliance

A carpenter must cut preservative-treated timber. Which precaution most specifically addresses the chemical hazard of the treatment?

  1. Wearing tinted safety glasses
  2. Using respiratory protection and gloves and washing exposed skin afterward Correct answer.
  3. Working faster to reduce exposure time
  4. Cutting outdoors only during lunch break

Explanation

Treated timber can release chemical dust and residues, so respiratory protection, gloves, and washing skin limit inhalation and skin contact. Speed, tinted glasses, and timing do not control the chemical exposure itself.

Question 30Occupational health and safety and environmental compliance

Which document should a carpenter consult to learn the hazards, safe handling, and first-aid measures for an adhesive used on site?

  1. The material safety data sheet Correct answer.
  2. The project Gantt chart
  3. The delivery receipt
  4. The client's design drawing

Explanation

A safety data sheet provides the hazard classification, handling precautions, and first-aid measures for a chemical product. Drawings, schedules, and receipts do not describe chemical hazards.

Question 31Occupational health and safety and environmental compliance

Sawdust from sanding has built up heavily around a workbench. Which control most directly reduces both fire risk and respiratory exposure?

  1. Opening a window after work hours
  2. Ignoring it because sawdust is natural
  3. Wetting the floor once a week
  4. Regular extraction at the source combined with housekeeping and respiratory protection Correct answer.

Explanation

Capturing dust at the source with extraction stops it accumulating and becoming airborne, while housekeeping and a respirator handle what remains. Sawdust is combustible and respirable, so passive measures alone are insufficient.

Question 32Occupational health and safety and environmental compliance

A worker is about to use a nail gun to fix studs. Which combination best reflects safe use of a powder-actuated or pneumatic fastening tool?

  1. Test the tool by firing into a loose board held by a co-worker
  2. Disconnect the air supply before clearing a jam and never point the tool at anyone Correct answer.
  3. Use the tool without eye protection to improve aim
  4. Keep the trigger depressed while moving between fixing points

Explanation

Isolating the energy source before clearing a jam prevents accidental firing, and never pointing the tool at people controls the risk of serious penetrating injury. Carrying a tool with the trigger depressed or testing it against a person is extremely dangerous.

Question 33Occupational health and safety and environmental compliance

A carpenter must work in a confined space beneath a raised floor to install joists. Which action should be taken before entry?

  1. Test the atmosphere and arrange a standby person and rescue plan Correct answer.
  2. Leave the access hatch closed to keep dust out
  3. Ask a co-worker to shout occasionally
  4. Enter quickly to limit the time inside

Explanation

Confined spaces can contain oxygen-deficient or toxic atmospheres, so atmospheric testing, a standby attendant, and a rescue plan are required before entry. Speed, occasional shouting, or closing the hatch do not control the atmospheric hazard.

Question 34Occupational health and safety and environmental compliance

Which is the correct way to store a chisel and other edged hand tools at the end of a shift?

  1. Hang them by the blade on a nail
  2. Toss them into a bucket with other tools
  3. Leave them on the floor near the workbench
  4. Place them in a toolbox or rack with the cutting edge protected Correct answer.

Explanation

Storing edged tools with the cutting edge protected in a rack or toolbox prevents accidental cuts and protects the tool. Leaving them loose on the floor or in a mixed bucket creates cut hazards and damages the edge.

Question 35Occupational health and safety and environmental compliance

A worker notices that a portable grinder's guard has been removed to fit into a tight corner. What is the correct response?

  1. Wear a heavier glove and proceed
  2. Stop using the tool and report it so the guard is refitted Correct answer.
  3. Use it only with reduced speed
  4. Continue using it carefully for the corner work

Explanation

The guard is an engineered control that stops fragments and sparks from reaching the operator, so a tool with a missing guard must be taken out of service. Care, reduced speed, or gloves are not substitutes for the guard.

Question 36Occupational health and safety and environmental compliance

Which measure best controls the risk of a fall when a carpenter must work near an unprotected edge on an upper floor?

  1. Placing warning cones at the edge
  2. Installing a guardrail or edge protection before work begins Correct answer.
  3. Relying on steady footing and experience
  4. Working only when the supervisor is present

Explanation

Edge protection such as guardrails is a collective control that stops anyone from falling, regardless of individual care. Cones, experience, or supervision do not physically prevent a fall.

Question 37Occupational health and safety and environmental compliance

Which is the correct order of priority in the hierarchy of controls for a carpentry hazard such as exposure to wood dust?

  1. Personal protective equipment, then engineering controls, then elimination
  2. Administrative controls, then elimination, then personal protective equipment
  3. Elimination, then engineering controls, then administrative controls, then personal protective equipment Correct answer.
  4. Personal protective equipment, then administrative controls, then elimination

Explanation

The hierarchy ranks controls from most to least effective: eliminate the hazard, then engineer it out, then apply administrative measures, and finally rely on PPE. PPE is last because it depends on correct use and protects only the wearer.

Question 38Occupational health and safety and environmental compliance

A carpenter is preparing to spray lacquer in a small workshop. Which combination of controls best manages the fire and health risks?

  1. Spray near an open flame to burn off fumes
  2. Wear only a dust mask and work quickly
  3. Close all doors and windows to contain the smell
  4. Use a well-ventilated area, remove ignition sources, and wear a suitable respirator Correct answer.

Explanation

Lacquer vapors are flammable and harmful to inhale, so ventilation, elimination of ignition sources, and a suitable respirator are the core controls. Open flames, closed spaces, or a dust mask alone do not address vapor ignition or inhalation.

Question 39Occupational health and safety and environmental compliance

Which environmental practice best reduces pollution from a carpentry workshop's timber waste?

  1. Burning offcuts in a steel drum
  2. Dumping sawdust into a nearby stream
  3. Sorting reusable offcuts for reuse and sending the rest to recycling Correct answer.
  4. Mixing timber offcuts with general refuse

Explanation

Reusing usable offcuts and recycling the remainder diverts timber from landfill and conserves resources. Mixing, burning, or dumping waste causes pollution and prevents recovery of the material.

Question 40Occupational health and safety and environmental compliance

A carpenter is about to start a task and notices a strong smell of solvent and a spill on the floor near an electrical outlet. Which action sequence is most appropriate?

  1. Ignore the smell and finish the cut first
  2. Wipe the spill with a rag while continuing to work
  3. Stop work, remove ignition sources, ventilate, and clean the spill with suitable absorbent Correct answer.
  4. Open a window and keep working near the outlet

Explanation

A flammable spill near an electrical outlet creates a fire risk, so work should stop, ignition sources be controlled, the area ventilated, and the spill absorbed properly. Continuing work or merely opening a window leaves the ignition hazard in place.

Question 41Occupational health and safety and environmental compliance

Which practice best protects hearing when a carpenter uses a router for long periods?

  1. Wearing cotton wool in the ears
  2. Wearing hearing protection and limiting continuous exposure time Correct answer.
  3. Turning up music to mask the noise
  4. Using the router only in the morning

Explanation

Noise-induced hearing loss depends on both level and duration, so hearing protection combined with limiting exposure time is the effective control. Masking noise with music or using cotton wool does not reduce the sound energy reaching the ear.

Question 42Occupational health and safety and environmental compliance

During a site induction, a carpenter is told to report near misses. Why is reporting a near miss, such as a timber stack toppling without hitting anyone, valuable?

  1. It allows the hazard to be corrected before it causes an actual injury Correct answer.
  2. It provides evidence to blame the worker involved
  3. It replaces the need for a risk assessment
  4. It is only needed when damage occurs

Explanation

A near miss is a warning that a hazard exists without having caused harm yet, so reporting lets the cause be fixed before someone is injured. Reporting is not for assigning blame and does not replace risk assessment.

Question 43Occupational health and safety and environmental compliance

A carpenter is choosing between two methods for cutting a large number of repetitive timber pieces. Method A requires frequent manual handling of heavy sheets; Method B uses a roller support and a cutting table. Which reasoning best reflects risk assessment principles?

  1. Method B is better because it removes the manual handling hazard at its source Correct answer.
  2. Method B is better only if a supervisor is watching
  3. Method A is better because it needs less setup time
  4. Method A is better because heavy lifting builds strength

Explanation

Choosing the method that eliminates or reduces the hazardous manual handling at the source is a higher-order control than relying on worker behavior. Setup time and supervision do not change the underlying risk of lifting heavy sheets.

Question 44Occupational health and safety and environmental compliance

A workshop has a dust extraction system, but workers still complain of coughing after sanding. Investigation shows the extraction duct is disconnected at one machine. Which conclusion is most defensible?

  1. The workers should simply work faster to finish sooner
  2. The engineering control has failed, so it must be repaired and the exposure reassessed Correct answer.
  3. The respirators are faulty and should be replaced
  4. The dust is harmless and the complaints are unrelated

Explanation

A disconnected duct means the local exhaust ventilation is not capturing dust at the source, so the engineering control has failed. The correct response is to repair the system and reassess exposure rather than blame PPE or the workers.

Question 45Occupational health and safety and environmental compliance

A carpenter must work alone on a remote part of a site for several hours. Which arrangement best satisfies lone-working safety principles?

  1. Rely on a mobile phone with no check-in schedule
  2. Keep the work secret so no one interferes
  3. Establish a check-in schedule, ensure communication coverage, and make the location known Correct answer.
  4. Leave a note at the site office only at the end of the day

Explanation

Lone workers need a reliable means of communication, agreed check-in times, and someone who knows where they are so help can be sent if something goes wrong. A phone alone without a check-in plan or a known location leaves delays in an emergency.

Question 46Occupational health and safety and environmental compliance

A carpenter is handed a container of wood preservative transferred from its original drum into an unmarked plastic bottle. What is the most important reason to refuse to use it until it is properly labelled?

  1. Without a label the worker cannot identify the chemical, its hazards, or the correct first-aid and spill response Correct answer.
  2. Unlabelled containers are heavier and harder to pour accurately during application
  3. The label is only needed for shipping the product off site to a disposal facility
  4. Plastic bottles react with all preservatives and will melt during storage

Explanation

Under workplace chemical safety rules, a hazardous substance must be kept in its original labelled container or a secondary container that clearly identifies the contents and hazards. The label is the worker's primary source of hazard, handling, and emergency information, so losing it removes the basis for safe use. Decanting into a food or drink bottle is especially dangerous because it can be mistaken for a beverage.

Question 47Occupational health and safety and environmental compliance

A carpenter finishes a shift and needs to leave the workshop in a safe condition. Which combination of housekeeping actions best controls both fire and health risks from accumulated wood waste?

  1. Blow dust off benches with compressed air and leave it to settle on the floor
  2. Sweep dust into a corner and leave it until the weekly clean-up day
  3. Clear dust and offcuts into a metal bin with a lid, empty it at the end of the shift, and keep escape routes clear Correct answer.
  4. Pile offcuts beside the exit door so they are easy to collect the next morning

Explanation

Fine wood dust is both a fire and explosion risk and a respiratory hazard, so it should be collected promptly into a closed metal container and removed rather than allowed to accumulate. Keeping escape routes and exits clear is a parallel requirement so that people can leave quickly in an emergency. Regular end-of-shift clearing prevents the build-up that fuels fires and keeps airborne dust low.

Question 48Occupational health and safety and environmental compliance

A carpenter is asked to work on a scaffold platform where the guardrail has been temporarily removed for delivery of materials. Which response best reflects the correct application of the hierarchy of controls?

  1. Proceed carefully while staying well back from the open edge
  2. Ask a co-worker to watch the edge while the task is done
  3. Tie off to any nearby scaffold tube using a length of rope
  4. Stop work until the guardrail is reinstated or an engineered fall-arrest system is in place Correct answer.

Explanation

Eliminating or isolating the fall hazard with a physical barrier is a higher-order control than relying on behaviour or on improvised equipment. Work at an unprotected edge should not proceed until a compliant guardrail or a properly designed and inspected fall-arrest system is in place. Improvised rope tie-offs and informal watchers do not meet the standard for fall protection.

Question 49Occupational health and safety and environmental compliance

During a toolbox talk, a carpenter is told that a solvent-based contact adhesive will now be used in the workshop. Which action best shows the worker has applied the information required before first use?

  1. Read the safety data sheet and label, confirm ventilation and ignition controls, and check that suitable gloves and eye protection are available Correct answer.
  2. Open the windows slightly and begin gluing the largest panel first
  3. Rely on previous experience with a different brand of adhesive
  4. Store the adhesive near the saw to keep it within easy reach

Explanation

Before using a hazardous chemical for the first time, the worker must consult the label and safety data sheet to learn the specific hazards, required ventilation, ignition sources to avoid, and the correct personal protective equipment. Confirming those controls are in place before starting is the practical application of that information. Solvent adhesives are typically flammable and can cause respiratory and skin effects, so generic precautions are not enough.

Question 50Occupational health and safety and environmental compliance

A workshop has a local exhaust ventilation hood on the sanding station, but sanding still produces visible dust clouds in the breathing zone. Which analysis best identifies the most likely cause and the appropriate corrective action?

  1. Visible dust is normal with sanding and requires no action beyond a dust mask
  2. The hood is too close to the work, so it should be moved further away to draw a wider area
  3. The filter is probably too efficient, so a coarser filter should be fitted to increase airflow
  4. The hood position or capture velocity is inadequate, so the system should be checked and the hood repositioned to capture dust at source Correct answer.

Explanation

Local exhaust ventilation only controls dust if the hood is positioned so that the contaminant is captured before it enters the breathing zone, and if the airflow at the hood face is sufficient. Visible dust escaping into the breathing zone indicates inadequate capture, so the system should be inspected and the hood repositioned or airflow corrected. Relying on a mask alone leaves the dust in the air and does not address the source.