OSHA Hazard Communication Quiz — 29 CFR 1926.59 & 1910.1200 Practice Questions — Page 4 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. (Page 4 of 4)
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Q31/ 40
A subcontractor brings a new concrete admixture to a multi-employer site but has not added it to the site's chemical inventory. The GC's safety manager discovers it during a walkthrough. Who must provide the SDS and hazard information to the GC?
✅ Correct Answer: B
Under 1926.16(d), subcontractors are responsible for complying with standards applicable to their work. 1910.1200(e)(1) requires employers to develop and maintain a written hazard communication program that includes a list of hazardous chemicals. On multi-employer sites, 1926.16(c) requires the controlling contractor (GC) to coordinate safety efforts, but each employer maintains independent HazCom compliance duties. The subcontractor must maintain its own chemical inventory AND provide SDS copies to the GC for the master site file. 1926.59 requires that the HazCom standard applies to construction exactly as it does to general industry.
Q32/ 40
A worker is assigned to clean a confined space previously containing a solvent-based paint. The SDS lists the solvent's TLV-TWA as 50 ppm. The worker's air monitoring at the opening reads 35 ppm. The foreman issues a half-face organic vapor respirator and says to go in. Is this correct?
✅ Correct Answer: B
1926.1204(c)(2) requires that before entry, the internal atmosphere be tested first for oxygen, then for flammable gases and vapors, and then for potential toxic air contaminants — in that order. 1926.1204(c)(4) specifies that testing be conducted at multiple vertical levels (top, middle, bottom) because vapors stratify by density. A reading at the opening tells you nothing about the concentration at the bottom of the space. Additionally, 1910.1200 Appendix D provides that SDS exposure limits are for normal use — confined spaces concentrate vapors unpredictably. Entry based on an opening reading alone would violate 1926.1204.
Q33/ 40
A site has silica dust, welding fumes, and diesel exhaust all present simultaneously. The safety manager prepares separate SDS binders for each hazard category. Is this compliant?
✅ Correct Answer: B
1910.1200(e)(1)(i) requires a single list of hazardous chemicals known to be present, using an identity referenced on the appropriate SDS. 1910.1200(g)(8) requires that SDSs be readily accessible to employees in their work area during each work shift. Splitting SDSs into multiple binders by category increases the risk that an employee won't find the right one in an emergency. A single, alphabetized master binder (or electronic system with backup) at a known central location is the accepted compliant practice. Diesel exhaust particulates from heavy equipment are hazardous chemicals under the standard.
Q34/ 40
A Hispanic-speaking roofing crew applies a solvent-based adhesive. The SDS is only available in English. The foreman, who is bilingual, translates key points verbally. Half the crew only speaks Spanish. Is this compliant?
✅ Correct Answer: B
1910.1200(h)(1) requires that 'employees be provided with effective information and training on hazardous chemicals in their work area at the time of their initial assignment, and whenever a new chemical hazard is introduced.' 1910.1200(h)(2) specifies that training must be in a manner and language that the employee can comprehend. Verbal translation as the sole method is insufficient — the employees must be able to independently reference hazard information. This is a well-established area of OSHA enforcement, particularly in construction where multilingual crews are common. Failure to provide Spanish-language training and SDS access has resulted in numerous citations.
Q35/ 40
During an OSHA inspection, the compliance officer asks to see the Hazard Communication written program. The site superintendent hands over a generic program downloaded from the internet that lists chemicals not present on this site. What will likely happen?
✅ Correct Answer: B
1910.1200(e)(1) requires that the written program contain a list of hazardous chemicals known to be present using an identity referenced on the appropriate SDS. 1910.1200(e)(1)(i-iv) also requires methods for container labeling, SDS maintenance, employee training, and multi-employer coordination — all of which must be workplace-specific. A generic program listing chemicals not present provides no useful information and demonstrates that the employer has not actually conducted the required hazard determination. OSHA has consistently cited employers for 'paper programs' with no relation to actual site conditions. This is one of the most frequently cited HazCom violations.
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Q36/ 40
An older container of industrial solvent has no GHS pictogram, only the old NFPA diamond. A new shipment of the same chemical arrives with full GHS labeling. Which containers can legally remain in use?
✅ Correct Answer: C
1910.1200(f)(1) as updated by the 2012 GHS alignment requires that shipped containers be labeled with product identifier, signal word, hazard statements, pictograms, precautionary statements, and supplier information. 1910.1200(f)(5) requires that workplace labels be maintained and not defaced. While the standard allowed transition periods, those expired in 2016. An NFPA diamond alone does not meet GHS requirements for shipped containers — the container must be relabeled or replaced. The employer must ensure any container in active use carries a compliant label.
Q37/ 40
A small contractor (6 employees) uses only common consumer products: paint thinner, PVC cement, and spray lubricant — all purchased from Home Depot in consumer-sized containers with consumer labels. Does the contractor need a written HazCom program?
✅ Correct Answer: B
1910.1200(b)(6)(ix) exempts consumer products only when they are used in the same manner, frequency, and duration as a consumer would use them. A construction worker using PVC cement daily over 8-hour shifts is NOT the same exposure pattern as a homeowner gluing two pipes once. OSHA has repeatedly held in interpretation letters that construction use of consumer products exceeds the consumer exemption because of frequency and duration. There is no small-employer exemption under HazCom — 1910.1200 applies to all employers with hazardous chemicals in the workplace, regardless of size.
Q38/ 40
A worker is assigned to sandblast a steel bridge coated with lead-based paint. The SDS for the abrasive media is posted, but the SDS for the lead paint being removed is not. Is this compliant?
✅ Correct Answer: B
1910.1200(e)(1)(i) requires a list of ALL hazardous chemicals known to be present in the workplace. The lead paint being removed creates respirable lead dust and fume — it is as much a 'hazardous chemical present in the workplace' as any product being applied. 1926.62 (Lead in Construction) specifically requires hazard communication for lead exposures at any detectable level, with an action level of 30 μg/m³. EPA's RRP rule addresses lead paint disturbance from a public health perspective, but OSHA independently regulates worker exposure. The employer must have both an SDS for lead (or equivalent hazard information) and comply with the full 1926.62 program.
Q39/ 40
Silicone caulk is being applied indoors with no ventilation during winter. The SDS lists no hazardous ingredients, but 3 of 5 workers report headaches and nausea. What action is required?
✅ Correct Answer: B
Under the General Duty Clause 5(a)(1), when employees exhibit symptoms consistent with chemical exposure, the employer has a duty to investigate and abate — even if the SDS lists no hazards. Silicone caulk releases acetic acid, methanol, and other volatile organic compounds during curing. In an unventilated space, these reach concentrations that cause symptoms. 1926.57 requires ventilation when hazardous concentrations of air contaminants are present. Reliance on an SDS that may be incomplete or that does not account for confined/enclosed application is not a defense. The employer must conduct air monitoring and implement engineering controls if symptoms are present.
Q40/ 40
A GC's site has 12 different subcontractors, each with their own chemicals. The HazCom program is on the GC's laptop in the job trailer, locked when the superintendent is away. Is SDS access compliant?
✅ Correct Answer: B
1910.1200(g)(8) requires that SDSs be 'readily accessible' to employees in their work area during each work shift. OSHA interpretation letters consistently define 'readily accessible' as: employees must be able to obtain the SDS without barriers such as locked doors, password-protected files, asking permission, or waiting for a supervisor. An SDS locked in a job trailer defeats the purpose — if a worker is splashed with a chemical, they need immediate access to first aid information on the SDS. The GC must ensure SDSs are available at an unlocked, known location (e.g., a weather-protected SDS station at the site entrance) or in a binder accessible 24/7.