OSHA Hazard Communication Quiz — 29 CFR 1926.59 & 1910.1200 Practice Questions — Page 1 of 4
Free OSHA 30-Hour Construction hazard communication practice test with 40 realistic scenarios. GHS labels, Safety Data Sheets, written program, chemical inventory, silica, lead, asbestos, and multi-employer HazCom with 29 CFR 1926 Subpart D references.
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Q1/ 40
A masonry contractor delivers several pallets of bagged mortar mix and concrete to a residential construction site. The bags have no GHS labels. The site superintendent says 'It's just cement dust — don't worry about labels.' What does the OSHA Hazard Communication Standard (1926.59, incorporating 1910.1200) require?
✅ Correct Answer: B
1926.59 incorporates 1910.1200 (Hazard Communication). 1910.1200(f)(1): the chemical manufacturer, importer, or distributor shall ensure that each container of hazardous chemicals leaving the workplace is labeled with: product identifier, signal word, hazard statement(s), pictogram(s), precautionary statement(s), and supplier information. Portland cement is a hazardous chemical — it contains hexavalent chromium (carcinogen), causes alkali burns (wet cement), and produces respirable crystalline silica dust. 'It's just cement' is dangerously wrong.
Q2/ 40
A new employee on a construction site needs to use a solvent-based concrete curing compound. The supervisor hands the worker the product but the Safety Data Sheet (SDS) binder for the site is locked in the trailer and the supervisor has the key at home. The worker asks about hazards. What does 1926.59 require?
✅ Correct Answer: A
1910.1200(g)(8): the employer shall maintain in the workplace copies of the required safety data sheets for each hazardous chemical, and shall ensure that they are readily accessible during each work shift to employees when they are in their work area. 'Readily accessible' means: no barriers to immediate access — not locked in a trailer with the key off-site. Electronic access is acceptable if reliable access to devices is provided. The supervisor's verbal summary does not replace the SDS's 16 standardized sections.
Q3/ 40
A construction crew is cutting fiber cement siding containing crystalline silica using a circular saw without water or dust collection. The work is outdoors. The foreman claims outdoor work doesn't need silica controls 'because the wind blows the dust away.' What does 1926.1153 (Respirable Crystalline Silica) require?
✅ Correct Answer: B
1926.1153(c)(1): for each employee engaged in a task listed in Table 1, the employer shall fully and properly implement the engineering controls, work practices, and respiratory protection specified for the task. Table 1, Entry 8 (handheld power saws for fiber cement board): require the saw to be equipped with commercially available dust collection system, operated and maintained per manufacturer instructions to minimize dust emissions. The PEL is 50 μg/m³ averaged over an 8-hour day. 'Outdoors' is not an exemption. Wind direction changes — it doesn't eliminate the worker's breathing zone exposure.
Q4/ 40
A worker at a renovation site is removing old paint from a steel bridge built in 1965. The paint likely contains lead. No air monitoring has been done. The worker uses a needle gun (powered chipping tool) with no dust control. What does 1926.62 (Lead in Construction) require?
✅ Correct Answer: B
1926.62(d)(1): the employer shall perform an initial determination of whether any employee may be exposed to lead at or above the action level (30 μg/m³ averaged over 8 hours). Without air monitoring, the employer is guessing. Needle guns on lead paint typically generate lead exposures far exceeding the PEL of 50 μg/m³. 1926.62 requires specific compliance elements: written compliance plan, air monitoring, respirators per 1926.62(f), hygiene facilities (change rooms, wash stations), medical surveillance, and training. Presuming the paint contains lead on a 1965 bridge is the conservative (and likely correct) assumption.
Q5/ 40
A supervisor notices that several chemical containers on-site have labels that are faded and unreadable after being exposed to weather. A worker poured what was left in a labeled 'Form Release Oil' container into an unlabeled water bottle 'temporarily.' What violations exist?
✅ Correct Answer: B
1910.1200(f)(5): the employer shall not remove or deface existing labels on incoming containers of hazardous chemicals unless the container is immediately marked with the required information. Faded = defaced — replacement labels must be affixed. 1910.1200(f)(8): the employer shall ensure that workplace containers are labeled. Pouring chemicals into an unlabeled water bottle is a double violation: no label AND using a food/beverage container that could be mistaken for potable water — this has caused chemical ingestion fatalities.
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Q6/ 40
In a multi-employer worksite, a painting subcontractor brings a solvent-based paint containing toluene onto the general contractor's project. The painting sub provides no SDS, no hazard training to its own workers, and the GC has no information about the product. When an OSHA inspector asks, who is responsible for the hazcom violations?
✅ Correct Answer: C
Under the Multi-Employer Citation Policy: the painting sub is the EXPOSING employer (its workers are exposed to toluene without training or SDS). The GC is the CONTROLLING employer (it has authority to require subcontractors to provide SDSs before chemicals enter the site). Both can be cited. 1926.59/1910.1200(h)(1): employers shall provide employees with effective information and training on hazardous chemicals. The GC's failure to have a contractor safety pre-qualification program that requires SDS submission is a systemic gap.
Q7/ 40
A worker is mixing a two-part epoxy coating in a poorly ventilated basement. The SDS for Part A lists respiratory sensitization and skin corrosion as hazards. The worker wears leather gloves (not chemical-resistant) and no respirator. Within hours, the worker develops a severe rash and difficulty breathing. What hazcom and PPE failures occurred?
✅ Correct Answer: B
1910.1200(h)(1): training must include: detection methods, physical and health hazards, protective measures. The SDS Section 8 (Exposure Controls/Personal Protection) specifies required PPE — for epoxy hardeners, this typically includes nitrile or butyl rubber gloves (NOT leather, which absorbs chemicals and holds them against skin). SDS Section 2 lists respiratory sensitization — meaning each exposure can worsen the allergic reaction. The employer's failure to read and implement the SDS's PPE requirements led directly to a preventable occupational illness.
Q8/ 40
A construction site stores propane cylinders, oxygen cylinders, and acetylene cylinders together in a gang box with other tools. The oxygen and acetylene cylinders are not separated. What does 1926.350(a) require for compressed gas cylinder storage?
✅ Correct Answer: B
1926.350(a)(10): oxygen cylinders in storage shall be separated from fuel-gas cylinders or combustible materials (especially oil or grease) a minimum distance of 20 feet (6.1 m) or by a noncombustible barrier at least 5 feet (1.5 m) high having a fire-resistance rating of at least one-half hour. Storing them together in a gang box is an explosion hazard. A single spark or impact could cause oxygen-enriched combustion of the acetylene/propane. Valve protection caps must also be in place when cylinders are not in use (1926.350(a)(1)).
Q9/ 40
A worker on a road construction crew is exposed to asphalt fumes from hot-mix asphalt paving operations. The worker reports chronic headaches, nausea, and throat irritation. The employer provides no respiratory protection, claiming 'asphalt fume exposure limits are not explicitly listed in 1926.55 Appendix A.' What does OSHA require?
✅ Correct Answer: B
1926.55(b): exposure to airborne contaminants not specifically listed in Appendix A shall be controlled in accordance with ACGIH TLVs or other recognized exposure limits. Asphalt fumes contain polycyclic aromatic hydrocarbons (PAHs), known carcinogens. ACGIH has published exposure recommendations. Engineering controls for paving include: enclosed cabs with filtered air, fume-suppressed asphalt, lower application temperatures (warm-mix asphalt), and administrative controls. The General Duty Clause also applies — asphalt fume hazards are well-recognized in the construction industry.
Q10/ 40
A supervisor instructs workers to clean spray foam insulation equipment with a solvent labeled with a GHS pictogram showing a health hazard (exclamation mark) and flame. The work area is in a confined attic space. The supervisor says 'just work fast and you'll be fine.' What multiple hazard communication and confined space failures are occurring?
✅ Correct Answer: B
This scenario involves multiple violations across standards: (1) 1926.59/1910.1200(h): the employer must train workers on the specific hazards of the chemicals they use — the GHS label is a clue, not a substitute for training. (2) 1926.1203: attics can be permit-required confined spaces if they have limited entry/exit, are not designed for continuous occupancy, and contain a hazardous atmosphere (solvent vapors). (3) 1926.57: ventilation is required to control airborne contaminants. (4) The flammable pictogram means an explosive atmosphere can form in the enclosed space — a single spark from a tool could cause a flash fire.