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Question 1. Which OSHA provision gives employees the right to stop work when they believe a hazardous condition exists? A) General Duty Clause B) Stop Work Authority (SWA) C) Hazard Communication Standard D) Lockout/Tagout Standard Answer: B Explanation: SWA specifically empowers workers to halt operations if they perceive an imminent danger, protecting them from injury. Question 2. Under the OSH Act, which of the following is an employer’s primary responsibility? A) Providing annual health screenings B) Ensuring a workplace free from recognized hazards C) Offering free transportation to work sites D) Maintaining a minimum wage above the federal level Answer: B Explanation: The OSH Act requires employers to furnish a workplace free from recognized hazards that are likely to cause death or serious physical harm. Question 3. Which of the following best describes a “near miss” in OSHA reporting procedures? A) An injury that requires medical treatment beyond first aid B) An incident that results in property damage only C) An event that could have caused injury or illness but did not D) A scheduled safety drill that was missed Answer: C Explanation: A near miss is an unplanned event that had the potential to cause injury or illness but resulted in none; it must still be reported. Question 4. In housekeeping, which practice most effectively reduces slip hazards?
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A) Storing tools on the floor near workstations B) Using wet mops without warning signs C) Keeping aisles clear of debris and spills promptly cleaned D) Allowing employees to walk barefoot in the plant Answer: C Explanation: Prompt removal of debris and spills keeps walking surfaces clear, directly preventing slips. Question 5. Which chemical characteristic is NOT a primary concern under the Hazard Communication (HazCom) standard? A) Toxicity B) Corrosivity C) Magnetic properties D) Flammability Answer: C Explanation: HazCom focuses on health and physical hazards; magnetic properties are not covered. Question 6. A safety data sheet (SDS) must contain how many sections according to the GHS? A) 8 B) 12 C) 16 D) 20 Answer: C Explanation: The GHS requires a 16‑section format to uniformly present hazard information. Question 7. Which pictogram indicates a substance that is a skin irritant? A) Flame over a circle B) Exclamation mark inside a diamond C) Skull and crossbones
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Explanation: The connecting device (e.g., lanyard or rope) links the harness to the anchor point, completing the system. Question 11. Which of the following is the correct ladder set‑up ratio to ensure stability? A) 1: B) 2: C) 3: D) 4: Answer: D Explanation: A 4:1 ratio (one foot of base for every four feet of ladder height) provides proper stability. Question 12. In the Lockout/Tagout (LOTO) procedure, which step comes immediately after isolation of the energy source? A) Verification of zero energy B) Application of lockout devices and tags C) Notification of affected employees D) Shutdown of equipment Answer: B Explanation: After isolating the energy, locks and tags are applied to prevent re‑energization. Question 13. Which type of fire extinguisher is appropriate for a Class K kitchen fire? A) Water B) CO₂ C) Dry chemical (ABC) D) Wet chemical Answer: D Explanation: Wet‑chemical extinguishers are designed for cooking oil and grease fires (Class K).
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Question 14. The permissible exposure limit (PEL) for noise exposure is set at what time‑weighted average? A) 70 dBA over 8 hours B) 80 dBA over 8 hours C) 85 dBA over 8 hours D) 90 dBA over 8 hours Answer: C Explanation: OSHA’s noise PEL is 85 decibels, averaged over an 8‑hour workday. Question 15. Which of the following best defines a “permit‑required confined space”? A) A space that can be entered without training B) A space with limited entry points, hazardous atmosphere, or other serious hazards C) Any area larger than 10 square feet D) A location with adequate ventilation and lighting Answer: B Explanation: Permit‑required confined spaces have one or more recognized hazards that necessitate a formal entry permit. Question 16. In Process Safety Management (PSM), what is the primary purpose of a Process Hazard Analysis (PHA)? A) To calculate production costs B) To identify and evaluate potential process hazards C) To schedule routine maintenance D) To train new employees on equipment operation Answer: B Explanation: A PHA systematically assesses the likelihood and consequences of hazardous events. Question 17. Which of the following is NOT a component of the hierarchy of controls? A) Engineering controls
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C) The product name D) The supplemental information box Answer: B Explanation: The signal word “Danger” appears prominently on the label to indicate a severe hazard. Question 21. Which PPE inspection sign indicates that a hard hat must be discarded? A) A small crack on the visor B) Any dent, crack, or penetration of the shell C) Minor scuff marks on the exterior D) Faded color only Answer: B Explanation: Any damage compromising the shell’s integrity, such as cracks or dents, requires removal from service. Question 22. In an excavation, which soil classification requires the most protective measures? A) Type A (cohesive, rock) B) Type B (moderately cohesive) C) Type C (granular, low cohesion) D) Type D (sandy, dry) Answer: C Explanation: Type C soils are the least stable and need the most extensive shoring or sloping. Question 23. Which of the following fire‑triangle components is eliminated by using a fire blanket? A) Fuel B) Heat C) Oxygen D) Chemical reaction Answer: A
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Explanation: A fire blanket smothers the fire, removing the fuel source. Question 24. When conducting a Job Safety Analysis (JSA), the first step is to: A) Identify the required PPE B) List each step of the job C) Perform a risk assessment D) Develop corrective actions Answer: B Explanation: Breaking the job into discrete steps provides the foundation for hazard identification. Question 25. Which of the following statements about “qualified” electrical personnel is correct? A) They must have a high school diploma only B) They have received training on the specific equipment they work on C) They are exempt from all OSHA regulations D) They can work on any energized equipment without a lockout Answer: B Explanation: Qualified personnel possess the knowledge, training, and experience for the specific electrical tasks. Question 26. A worker is exposed to a chemical that is both corrosive and a skin sensitizer. Which GHS pictogram(s) must appear on the label? A) Flame only B) Corrosion only C) Exclamation mark only D) Both corrosion and exclamation mark Answer: D Explanation: Both hazards must be communicated; the corrosion symbol for corrosivity and the exclamation mark for sensitization.
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A) Notify the employee’s family within 24 hours B) Record the incident on the OSHA 300 Log if it meets recordable criteria C) Pay for the employee’s medical expenses only if the injury is severe D) Ignore the report if the injury does not require medical treatment Answer: B Explanation: Recordable injuries must be logged on the OSHA 300 Log for tracking and reporting. Question 31. Which of the following chemicals would be classified as a “reactive” material under HazCom? A) Sodium chloride B) Acetone C) Sodium metal D) Water Answer: C Explanation: Sodium metal reacts violently with water and air, making it a reactive hazard. Question 32. The appropriate action when a worker’s respirator mask is cracked is to: A) Continue using it if the filter is intact B) Repair the crack with duct tape C) Replace the respirator immediately D) Use it only for low‑hazard tasks Answer: C Explanation: Any damage to the respirator’s facepiece compromises its seal and must be replaced. Question 33. In a hot‑work permit, which of the following is a required precaution? A) Continuous water spray on the work area B) Removal of all combustible materials within a 35‑foot radius C) Mandatory use of a fire extinguisher on the worker’s belt at all times
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D) Completion of a PHA before starting the job Answer: B Explanation: Removing combustibles reduces the risk of fire ignition during hot work. Question 34. Which of the following is a primary benefit of conducting a Management of Change (MOC) review? A) Reducing the need for PPE B) Ensuring that changes do not introduce new hazards C) Increasing production speed automatically D) Eliminating the need for employee training Answer: B Explanation: MOC evaluates potential safety impacts before implementing changes to prevent new hazards. Question 35. The OSHA standard for electrical safety requires that a lockout device be: A) Color‑coded only B) Unique to each authorized employee C) Shared among all workers on a shift D) Made of plastic only Answer: B Explanation: Each lockout device must be uniquely identifiable to the employee who applied it, preventing unauthorized removal. Question 36. Which of the following best describes a “dual‑purpose” fire extinguisher? A) An extinguisher that can be used for both Class A and Class B fires B) An extinguisher that also serves as a carbon monoxide detector C) An extinguisher that can be refilled with water or foam D) An extinguisher that includes a built‑in first‑aid kit Answer: A
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Question 40. The “General Duty Clause” of the OSH Act applies to: A) Only construction workplaces B) All employers, regardless of industry, to provide a safe workplace C) Only employers with more than 20 employees D) Only federally regulated industries Answer: B Explanation: The clause imposes a universal duty on all employers to keep workplaces free from recognized hazards. Question 41. Which of the following is the correct order for the six steps of Lockout/Tagout? A) Shutdown, Isolation, Preparation, Application, Verification, Energy release B) Preparation, Shutdown, Isolation, Application, Energy release, Verification C) Preparation, Shutdown, Isolation, Application, Verification, Energy release D) Shutdown, Preparation, Isolation, Verification, Application, Energy release Answer: C Explanation: The sequence is Preparation → Shutdown → Isolation → Application of lockout/tagout → Verification → Release of stored energy. Question 42. A worker is required to wear a hearing protection device (HPD) when noise exposure reaches what level? A) 70 dBA for 8 hours B) 80 dBA for 8 hours C) 85 dBA for 8 hours D) 90 dBA for 8 hours Answer: C Explanation: OSHA mandates HPD use when the 8‑hour TWA noise level equals or exceeds 85 dBA. Question 43. Which of the following is NOT a requirement for a valid SDS?
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A) Section on “First‑aid measures” B. “Physical and chemical properties” section C. “Company logo” in the header D. “Exposure controls/personal protection” Answer: C Explanation: While a logo may be present, it is not a required SDS element under GHS. Question 44. The purpose of a “guardrail” system on elevated platforms is to: A) Provide a climbing aid B) Prevent tools from falling C) Stop a worker from falling more than 6 feet D) Serve as a decorative barrier Answer: C Explanation: Guardrails are designed to stop a falling worker within the OSHA‑defined height limit (6 feet). Question 45. Which of the following is an example of a physical hazard under the Hazard Communication Standard? A) Benzene (toxic inhalation) B) Hydrochloric acid (corrosive) C) Propane (flammable gas) D) Lead (heavy metal toxicity) Answer: C Explanation: Physical hazards relate to the material’s ability to cause fire, explosion, or reactivity; propane is a flammable gas. Question 46. Under the Process Safety Management (PSM) standard, a “covered process” must involve a chemical that is present at or above what threshold quantity? A) 10 lb B) 100 lb
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D) Respiratory supplied‑air system with a hose line Answer: D Explanation: Supplied‑air respirators rely on an external air source (engineered control) rather than solely on personal equipment. Question 50. When performing a lockout on a hydraulic press, which of the following is required before applying the lock? A) Verify the press is in operation B) Drain all hydraulic fluid C) De‑energize the electrical motor that powers the pump D) Remove the safety guard Answer: C Explanation: The energy source (electrical motor) must be shut down and isolated before lock application. Question 51. Which of the following signals that a chemical is a “skin sensitizer” on a GHS label? A) Flame pictogram B) Exclamation mark pictogram C) Health hazard pictogram (silhouette with star) D) No pictogram required Answer: C Explanation: The health‑hazard symbol indicates carcinogenicity, mutagenicity, reproductive toxicity, or sensitization. Question 52. In a confined‑space entry permit, the “Attendant” is primarily responsible for: A) Performing the atmospheric testing inside the space B) Monitoring the space from outside and initiating rescue if needed C) Operating the equipment inside the space D) Issuing the entry permit to the entrant
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Answer: B Explanation: The attendant stays outside, watches the entrant, and calls for rescue if conditions deteriorate. Question 53. Which of the following is a correct statement about “qualified” versus “unqualified” employees in electrical work? A) Qualified employees must have a college degree in engineering. B) Unqualified employees may work on live parts if they wear gloves. C) Qualified employees have received training specific to the equipment they service. D) Unqualified employees are exempt from lockout/tagout procedures. Answer: C Explanation: Qualification is based on training, experience, and knowledge specific to the task, not on formal education. Question 54. Which of the following is the most effective method to control exposure to airborne silica dust? A) Provide N95 respirators only B) Use water‑spraying or wet methods to suppress dust at the source C) Increase ventilation after the work is completed D) Require workers to take frequent breaks outdoors Answer: B Explanation: Controlling the hazard at the source (wet methods) is more effective than relying on PPE alone. Question 55. Under OSHA’s Hearing Conservation Standard, when must audiometric testing be provided to employees? A) Only when they request it B) After 6 months of exposure at or above the action level (85 dBA) C) After 1 year of any exposure level D) Only for employees in the manufacturing sector
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Explanation: A rope ladder is not a PFAS component; the system consists of anchor, harness, and connecting device. Question 59. When a worker’s gloves become punctured while handling a corrosive liquid, the correct action is to: A) Continue using them if the puncture is small B) Tape over the puncture and keep working C) Remove the gloves immediately and replace them with a new pair D) Switch to a different task that does not involve the chemical Answer: C Explanation: Damaged gloves no longer provide protection and must be replaced instantly. Question 60. Which of the following best describes the “Hierarchy of Controls” order from most to least effective? A) PPE → Administrative → Engineering → Substitution → Elimination B) Elimination → Substitution → Engineering → Administrative → PPE C. Engineering → PPE → Administrative → Substitution → Elimination D. Administrative → PPE → Elimination → Substitution → Engineering Answer: B Explanation: The hierarchy prioritizes eliminating the hazard, then substituting, engineering controls, administrative controls, and finally PPE. Question 61. An employee is required to wear a face shield in addition to safety glasses when: A) Working in a low‑light environment B) Grinding metal that creates flying particles C) Using a hand‑held screwdriver D) Performing routine paperwork Answer: B
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Explanation: Grinding produces high‑velocity fragments that can bypass safety glasses; a face shield provides additional protection. Question 62. Which OSHA standard addresses the safe use of scaffolding? A) 1910.147 – Lockout/Tagout B) 1926.451 – Scaffolding C) 1910.134 – Respiratory Protection D) 1910.120 – Hazardous Waste Operations Answer: B Explanation: OSHA 1926.451 specifically governs scaffold safety requirements. Question 63. Under the Emergency Action Plan (EAP) requirements, which of the following must be included? A) Detailed product specifications B) A list of all contractors on site C) Procedures for reporting fires and other emergencies D) Annual performance reviews of supervisors Answer: C Explanation: The EAP must contain emergency reporting and evacuation procedures. Question 64. Which of the following is the correct order of steps for a proper fire drill? A) Sound alarm → Evacuate → Account for personnel → Debrief B. Evacuate → Sound alarm → Account for personnel → Debrief C. Account for personnel → Sound alarm → Evacuate → Debrief D. Sound alarm → Debrief → Evacuate → Account for personnel Answer: A Explanation: The alarm signals evacuation; once everyone is out, a headcount is taken, followed by a debrief.
