OSHA hazard communication quiz: every question answered

Last updated 2026-07-09

What is OSHA's Hazard Communication Standard and why does it get quizzed so often?

OSHA's Hazard Communication Standard lives at 29 CFR 1910.1200 for general industry, with a parallel rule at 29 CFR 1926.59 for construction. ^[1] It gets cited a lot. In fiscal year 2023, HazCom ranked second on OSHA's top-ten citation list with 2,911 violations. ^[2] That frequency is exactly why employers, safety officers, and new-hire trainers keep hunting for reliable quiz questions and answers.

The logic behind the standard is plain. If your employees might be exposed to hazardous chemicals, they need to know what those chemicals can do, how to read the labels and Safety Data Sheets (SDSs) that describe the hazards, and what protective steps to take. OSHA revised the standard in 2012 to line up with the Globally Harmonized System of Classification and Labeling of Chemicals (GHS), which the agency adopted from the United Nations. ^[3] That revision is why quiz questions reference both 'HazCom 2012' and 'GHS.'

Want a broader grounding in OSHA's structure before you tackle the specifics? The hazard communication overview is a good starting point.

What are the 16 sections of a Safety Data Sheet?

A compliant Safety Data Sheet has 16 sections in a fixed order, set by Appendix D to 29 CFR 1910.1200. ^[4] This is the single most-tested area in any HazCom quiz. Here they are:

#	Section Name	What it covers
1	Identification	Product name, supplier, recommended use, emergency phone
2	Hazard(s) identification	GHS classification, signal word, hazard and precautionary statements
3	Composition/information on ingredients	Chemical names, CAS numbers, trade secrets
4	First-aid measures	Routes of exposure, symptoms, required treatment
5	Fire-fighting measures	Suitable extinguishing media, special hazards, PPE for firefighters
6	Accidental release measures	Spill containment, cleanup procedures
7	Handling and storage	Safe handling conditions, incompatible materials
8	Exposure controls/personal protection	OSHA PELs, ACGIH TLVs, required PPE
9	Physical and chemical properties	Appearance, odor, pH, flash point, etc.
10	Stability and reactivity	Chemical stability, conditions to avoid
11	Toxicological information	Routes of exposure, acute/chronic effects, carcinogenicity
12	Ecological information	Environmental fate (required by GHS, not enforceable by OSHA)
13	Disposal considerations	Disposal methods, regulatory requirements
14	Transport information	UN number, proper shipping name, hazard class
15	Regulatory information	SARA, RCRA, state right-to-know listings
16	Other information	Revision date, preparation date, key abbreviations

Sections 12 through 15 exist to line up with the UN GHS, but OSHA does not enforce their content under 1910.1200. That nuance shows up on harder quizzes. The section you'd check first after a spill is Section 6. The section that tells a nurse what symptoms to watch for is Section 11. The section listing what respirator to use is Section 8. Learn which information lives in which numbered section and you'll score fast.

What are the 9 GHS pictograms and what do they mean?

GHS pictograms are diamond-shaped symbols with a red border and a black symbol on a white background. OSHA's HazCom standard requires them on labels and, where relevant, on SDSs. ^[1] There are nine total:

1. Flame: flammable solids, liquids, gases, self-reactives, pyrophorics, self-heating chemicals, and chemicals that emit flammable gas in contact with water. 2. Flame over circle: oxidizers. 3. Exploding bomb: explosives, self-reactives, and organic peroxides. 4. Skull and crossbones: acute toxicity (fatal or toxic). 5. Exclamation mark: irritants, skin sensitizers, acute toxicity (harmful), narcotics, respiratory tract irritants, and hazardous to the ozone layer. 6. Health hazard (person with starburst on chest): carcinogens, respiratory sensitizers, reproductive toxicity, target organ toxicity, aspiration hazards. 7. Corrosion (surface and hand being damaged): skin corrosion/burns, eye damage, corrosive to metals. 8. Gas cylinder: gases under pressure. 9. Environment (dead tree and fish): aquatic toxicity. OSHA's HazCom does not enforce the environment pictogram, but suppliers using the full GHS system include it.

A common trick question asks how many pictograms OSHA enforces. The answer is eight. The environmental pictogram (the dead tree and fish) is required by the full UN GHS but not enforced by OSHA under 29 CFR 1910.1200. ^[3]

Don't confuse the exclamation mark with the health hazard. The exclamation mark covers less severe hazards like irritation. The health hazard covers the serious long-term stuff: cancer, reproductive harm, specific organ damage.

What are the 6 required elements on a GHS-aligned chemical label?

Every label on a hazardous chemical shipped to a workplace must carry exactly six elements under 29 CFR 1910.1200(f). ^[1] Labels are where workers get real-time information, so HazCom quizzes almost always include a label-element question. The six:

1. Product identifier (the name or number that matches the SDS). 2. Signal word (either 'Danger' or 'Warning'; 'Danger' is more severe). 3. Hazard statement(s) (standardized phrases describing the nature of the hazard, like 'Causes serious eye damage'). 4. Precautionary statement(s) (what to do to prevent exposure, store safely, respond to exposure, and dispose of the chemical). 5. Pictogram(s) (the GHS diamond symbols). 6. Name, address, and phone number of the manufacturer, importer, or responsible party.

A workplace label on a secondary container (a spray bottle someone filled from a larger drum, for example) doesn't need to be as formal as a shipped container label, but it does need to identify the product and include hazard information. ^[1] Appendix C to 1910.1200 walks through the requirements for both label types in detail. ^[6]

Quiz shortcut: the signal word is one of the most commonly missed items. People forget it's its own required element, separate from the hazard statement.

What does the written Hazard Communication Program have to include?

Every employer whose workers may be exposed to hazardous chemicals must keep a written HazCom program under 29 CFR 1910.1200(e). ^[1] Three things have to be in it.

First, how the employer will meet the labeling requirements, including any workplace labeling system. Second, how the employer will maintain SDSs and make them accessible during all work shifts. Third, how employees will be informed and trained on the hazards of chemicals in their work area.

The program also has to list the hazardous chemicals known to be present in the workplace, though OSHA lets you keep that list separately and reference it in the program rather than embed it.

One question that trips people up on quizzes: the written program must be available to employees, their designated representatives, and OSHA compliance officers on request. You can't lock it in a manager's desk.

Building your written program from scratch? A generator like SafetyFolio can produce a compliant HazCom program tailored to your chemicals and work areas in about 15 minutes, which beats decoding the appendices on your own.

Construction employers face the same written program requirement under 29 CFR 1926.59, with one added wrinkle: multi-employer worksites require the program to spell out how hazard information gets exchanged between contractors. ^[8]

What do OSHA HazCom training requirements actually require?

Training is required before an employee's initial assignment to a work area where hazardous chemicals are present, and whenever a new chemical hazard is introduced. ^[10] There's no mandated number of hours. What matters is whether the training covers the topics listed in 29 CFR 1910.1200(h).

Those required topics: the existence and requirements of the HazCom standard itself; the chemicals present in the employee's work area; the location and availability of the written program and SDSs; methods and observations used to detect a chemical release; the physical, health, and simple asphyxiation hazards of the chemicals; how to protect against those hazards (PPE, safe work practices, emergency procedures); and how to read and use the label and SDS.

OSHA does not require annual refresher training unless new chemical hazards are introduced or the employer has reason to believe workers don't retain the information. Plenty of employers run annual refreshers anyway, and it's a sound habit. See OSHA training for how these requirements fit into a full training program.

Training can be done in person, online, by video, or any other method, as long as employees can ask questions and the training covers all required content. OSHA has confirmed this in multiple letters of interpretation. ^[5]

What is 'immediate access' to SDSs and what does it mean for your quiz?

SDSs must be readily accessible to employees in their work area during each work shift, per 29 CFR 1910.1200(g)(8). ^[1] Readily accessible means immediately, not 'go ask a supervisor' or 'check after your break.'

OSHA allows electronic SDS systems (computers, tablets, kiosks), but with a catch. If the electronic system is the only means of access, there must be a backup plan for system failures, power outages, or hardware problems. OSHA spelled this out in a 1997 letter of interpretation, stating that employers using electronic systems must train employees to use them and must have a backup procedure. ^[5]

Paper binders still work fine. Many small employers keep a three-ring binder in each work area with SDSs for every chemical used there. The binder has no technical failure risk, which is why it stays common.

For the quiz: readily accessible and immediately available mean the same thing. If a question asks whether an employer can keep SDSs locked in a filing cabinet accessible only during business hours, the answer is no.

How does GHS classification work and what do signal words mean?

GHS sorts hazards into numbered categories, and here's the part that catches people: Category 1 is the most severe, not the least. A chemical classified as Flammable Liquid Category 1 has a lower flash point and is more dangerous than Flammable Liquid Category 4. Quiz-takers who assume higher numbers mean more danger get this wrong.

Signal words under GHS come down to two: 'Danger' for more severe hazard categories and 'Warning' for less severe ones. A single product might carry multiple hazard classifications, but only one signal word appears on the label, and it's always the more severe of the two if both would apply. ^[3]

Hazard statements are fixed, standardized phrases assigned by GHS. Examples: 'H225 Highly flammable liquid and vapour' or 'H302 Harmful if swallowed.' These H-codes show up on SDSs and labels. Precautionary statements get P-codes: P260 is 'Do not breathe dust/fume/gas/mist/vapours/spray.'

Quizzes sometimes ask the difference between a hazard statement and a precautionary statement. Hazard statements describe what the chemical can do to you or the environment. Precautionary statements describe what you should do about it. Different purpose, different code letter.

What are common wrong answers on HazCom quizzes and why do people miss them?

A few patterns come up over and over.

The '15 sections' trap. Some older materials still show 15 SDS sections, left over from before the 2012 GHS update. The current correct answer is 16. If a quiz was written before 2012 or references the old MSDS format, the answer might still read 15, but any current OSHA-aligned quiz should say 16.

The pictogram count. Eight GHS pictograms are enforced by OSHA. Nine exist under the full UN GHS system. If a question asks how many are required by the OSHA standard, 8 is the precise answer, though many training programs just say 9 and treat the environmental one as included.

Employer vs. chemical manufacturer responsibilities. Manufacturers, importers, and distributors have to create compliant labels and SDSs. Employers have to train workers, maintain SDSs, and keep labels intact. A quiz question asking 'who must prepare an SDS' has 'the chemical manufacturer or importer' as the correct answer, not the employer. ^[1]

The written program timing question. OSHA requires the written program to exist before employees are exposed to hazardous chemicals, more than before they start work at the company. That's a real distinction for employers who rotate workers between areas.

For a solid foundation in OSHA's overall structure, what does OSHA stand for is a good reference, and OSHA 30 training covers how HazCom fits into the broader 30-hour curriculum.

What does a full OSHA HazCom quiz look like with sample questions and answers?

Here's a representative set of questions that mirror what you'll see on employer-issued HazCom quizzes, OSHA 10/30 assessments, and GHS training tests.

Q1: How many sections does a compliant SDS contain? A: 16

Q2: What is the signal word that indicates the more severe hazard category? A: Danger

Q3: Which SDS section tells you what PPE to wear? A: Section 8 (Exposure Controls/Personal Protection)

Q4: Which SDS section contains first-aid information? A: Section 4

Q5: How many GHS pictograms are required by OSHA's HazCom standard? A: 8 (the environmental pictogram exists in the full UN GHS but is not enforced by OSHA)

Q6: What are the 6 required elements on a GHS label? A: Product identifier, signal word, hazard statement(s), precautionary statement(s), pictogram(s), and supplier/manufacturer contact information

Q7: What must employers do before an employee works with hazardous chemicals for the first time? A: Provide HazCom training covering the topics in 29 CFR 1910.1200(h)

Q8: What does OSHA require regarding SDS accessibility? A: SDSs must be readily accessible to employees in their work area during each work shift (29 CFR 1910.1200(g)(8))

Q9: Who is responsible for preparing an SDS? A: The chemical manufacturer, importer, or distributor, not the employer

Q10: Under GHS, which category number indicates the most severe hazard? A: Category 1

Q11: What is the name of OSHA's standard that covers chemical hazards in the workplace? A: The Hazard Communication Standard, 29 CFR 1910.1200

Q12: A worker transfers acetone from a large drum into a smaller spray bottle. What must the workplace label on that bottle include? A: At minimum, the product identifier and appropriate hazard warnings

These cover the core areas tested in almost every HazCom quiz, whether it's called a 'hazard communication quiz,' a 'HazCom and GHS quiz,' or an 'OSHA global HazCom quiz.'

How does HazCom connect to other OSHA requirements you should know?

HazCom doesn't stand alone. It touches several other OSHA standards in ways that surface on more advanced training assessments.

Process Safety Management (29 CFR 1910.119) applies when facilities hold large quantities of highly hazardous chemicals. PSM requires a Process Hazard Analysis that builds on chemical hazard information from SDSs.

Respiratory Protection (29 CFR 1910.134) references the chemical exposure limits that appear in SDS Section 8. If an SDS lists an OSHA Permissible Exposure Limit (PEL) for a chemical, the respiratory protection program has to address it.

Personal Protective Equipment (29 CFR 1910.132) requires a hazard assessment. Chemical hazards identified through the HazCom program feed straight into that assessment.

Lockout/Tagout (29 CFR 1910.147) applies when servicing equipment that uses hazardous energy. Chemical systems often fall under both HazCom and LOTO. See lockout tagout for a full breakdown of how that standard works.

If your workplace handles acids, the HCl safety data sheet article shows how to read a real SDS in practice, which is exactly the skill HazCom training is meant to build.

These connections matter for OSHA 10 and 30 assessments, which test whether students understand how standards interact, more than the individual rules in isolation. The OSHA 30 course covers HazCom as part of a broader curriculum.

For any employer building a full safety program that includes HazCom, SafetyFolio's safety program generator can build a compliant written HazCom program alongside your other required written programs at once, instead of treating each as a separate project.

Frequently asked questions

How many sections does an OSHA-required Safety Data Sheet have?

16 sections, in a fixed order specified in Appendix D to 29 CFR 1910.1200. The format replaced the old Material Safety Data Sheet (MSDS) format when OSHA adopted GHS in 2012. Sections 12 through 15 are included for GHS alignment but OSHA does not enforce their content.

What are the 6 elements required on a GHS chemical label?

Product identifier, signal word (Danger or Warning), hazard statement(s), precautionary statement(s), pictogram(s), and the name, address, and phone number of the manufacturer, importer, or responsible party. All six are required by 29 CFR 1910.1200(f) on shipped containers.

How many GHS pictograms are there, and how many does OSHA enforce?

There are 9 pictograms in the full UN GHS system. OSHA enforces 8 of them under 29 CFR 1910.1200. The ninth, the environmental pictogram showing a dead tree and fish, is not enforced by OSHA's HazCom standard, though some suppliers include it voluntarily.

What signal words are used under GHS and which one is more severe?

'Danger' and 'Warning' are the only two GHS signal words. 'Danger' indicates the more severe hazard category within a hazard class. Only one signal word appears on a label even if the chemical has multiple hazard classifications, and it's always the more severe of the applicable options.

When does OSHA require HazCom training to be completed?

Before the employee's initial assignment to a work area where hazardous chemicals are present, per 29 CFR 1910.1200(h). Additional training is required when a new chemical hazard is introduced. OSHA does not specify minimum hours, only that the training must cover all topics listed in the standard.

What must a written Hazard Communication Program include?

Three things: how the employer meets labeling requirements, how SDSs are maintained and made accessible, and how employees are trained. The program must also reference or include a list of hazardous chemicals in the workplace. It must be available to employees, their representatives, and OSHA inspectors on request.

Under GHS, which category number is the most severe: Category 1 or Category 4?

Category 1 is the most severe. GHS hazard categories run from 1 (most dangerous) to higher numbers (less dangerous). A Flammable Liquid Category 1 product has a lower flash point and poses greater fire risk than a Flammable Liquid Category 4 product.

Which SDS section lists exposure limits and PPE requirements?

Section 8, 'Exposure Controls/Personal Protection.' It covers OSHA Permissible Exposure Limits (PELs), ACGIH Threshold Limit Values (TLVs), engineering controls, and recommended personal protective equipment including respirators, gloves, and eye protection.

Can an employer keep SDSs in an electronic system instead of paper binders?

Yes, OSHA allows electronic SDS management systems. However, employees must be trained to use the system, and there must be a backup plan if the system goes down during a work shift. OSHA addressed this in a 1997 letter of interpretation. A paper backup binder for power-outage scenarios is a common solution.

Who is responsible for writing the SDS for a chemical, the manufacturer or the employer?

The chemical manufacturer, importer, or distributor is responsible for preparing a compliant SDS under 29 CFR 1910.1200(g). The employer's obligation is to obtain SDSs for every hazardous chemical in the workplace, keep them accessible, and train employees to use them.

What is the CFR citation for OSHA's Hazard Communication Standard?

29 CFR 1910.1200 for general industry. The construction industry parallel is 29 CFR 1926.59, which adopts the same requirements. Both standards have been aligned with the Globally Harmonized System of Classification and Labeling of Chemicals (GHS) since OSHA's 2012 revision.

What was HazCom's rank on OSHA's top citation list in fiscal year 2023?

HazCom ranked second on OSHA's top-ten most-cited standards list for FY 2023, with 2,911 violations recorded. It is consistently one of the top-cited standards year over year, which is why HazCom training and testing is taken seriously across most industries.

What is the difference between a hazard statement and a precautionary statement on a GHS label?

A hazard statement describes the nature and degree of the chemical's hazard (for example, 'Causes serious eye damage'). A precautionary statement describes what to do, such as how to handle, store, respond to exposure, or dispose of the chemical. Hazard statements use H-codes; precautionary statements use P-codes.

Does HazCom training need to be repeated every year?

OSHA does not require annual refresher training under 29 CFR 1910.1200. Retraining is required when new chemical hazards are introduced or when there's reason to believe employees don't understand the information. Many employers do annual refreshers voluntarily as a best practice, but it is not an OSHA mandate.

Sources

1. OSHA, 29 CFR 1910.1200 Hazard Communication Standard (full regulatory text): Label elements, SDS requirements, training obligations, and written program requirements for the Hazard Communication Standard
2. OSHA, Top 10 Most Cited Standards: HazCom ranked second with 2,911 violations in OSHA's FY 2023 top-cited standards list
3. OSHA, Hazard Communication safety topic page (GHS overview): OSHA adopted GHS in 2012; 8 GHS pictograms enforced by OSHA; signal word and classification category definitions
4. OSHA, Appendix D to 1910.1200: Safety Data Sheets (mandatory 16-section format): Mandatory 16-section SDS format and content requirements; sections 12-15 not enforced by OSHA
5. OSHA, Standard Interpretations letters index (electronic access to SDS, 1997): OSHA allows electronic SDS systems with required training and backup procedures for system failures
6. OSHA, Appendix C to 1910.1200: Allocation of Label Elements (mandatory): Requirements for shipped container labels and workplace labels, including secondary container labeling
7. United Nations Economic Commission for Europe, Globally Harmonized System of Classification and Labelling of Chemicals (GHS), Rev. 9: Full UN GHS includes 9 pictograms; environmental pictogram is part of the UN system
8. OSHA, 29 CFR 1926.59 (HazCom for construction): Construction industry parallel to 1910.1200, including multi-employer worksite information-sharing requirements
9. OSHA, Hazard Communication safety topic page (2012 final rule aligning with GHS): 2012 revision aligning HazCom with GHS, replacing MSDS format with 16-section SDS format
10. OSHA, 29 CFR 1910.1200(h) Employee Information and Training: Required training topics and timing (before initial assignment); no minimum hours specified
11. OSHA, Publications page (Hazard Communication guidance documents): Employer obligations vs. manufacturer obligations for SDS preparation under HazCom