TheoryOSHA HazCom / GHS
Practice Test
GHS pictograms, SDS sections and HazCom rules in a quick-quiz format for workplace safety sign-off.
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30 free OSHA HazCom / GHS questions
Sampled across every topic area — not just the first page. Try them as a quiz or flip them as flashcards.
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GHS Pictograms
What shape and border does a GHS hazard pictogram use?
Correct — B. GHS pictograms are a red diamond (a square set on its point) framing a black hazard symbol on a white background. -
GHS Pictograms
The 'Flame' pictogram is used primarily for which kind of hazard?
Correct — A. The Flame pictogram covers flammables, self-reactives, pyrophorics, self-heating substances, and those that emit flammable gas in contact with water. -
GHS Pictograms
Which hazard is shown by the 'Flame Over Circle' pictogram?
Correct — B. The Flame Over Circle pictogram identifies oxidizers — substances that can cause or intensify fire by supplying oxygen. -
GHS Pictograms
The 'Exploding Bomb' pictogram warns of which hazards?
Correct — B. The Exploding Bomb covers explosives and certain self-reactive substances and organic peroxides that can detonate or explode. -
GHS Pictograms
The 'Gas Cylinder' pictogram indicates what type of hazard?
Correct — B. The Gas Cylinder pictogram is used for gases under pressure: compressed, liquefied, refrigerated liquefied, and dissolved gases. -
GHS Pictograms
The 'Corrosion' pictogram (test tubes on a hand and metal) is used for:
Correct — B. The Corrosion pictogram covers skin corrosion/burns, serious eye damage, and substances corrosive to metals. -
GHS Pictograms
The 'Skull and Crossbones' pictogram is reserved for which hazard?
Correct — B. The Skull and Crossbones signals acute toxicity in the severe categories (1–3), where small exposures can be fatal or seriously toxic. -
GHS Pictograms
A product showing only the 'Exclamation Mark' pictogram most likely poses which hazard?
Correct — B. The Exclamation Mark covers lower-severity hazards: skin/eye irritation, skin sensitization, acute toxicity (category 4), and narcotic/respiratory irritation. It is not used together with the Skull or Corrosion symbols for the same endpoint. -
GHS Pictograms
The 'Health Hazard' pictogram (silhouette with a star burst in the chest) covers which serious effects?
Correct — B. The Health Hazard (silhouette) pictogram is used for the most serious long-term health effects: carcinogen, mutagen, reproductive toxicity, respiratory sensitizer, target-organ toxicity, and aspiration hazard. -
GHS Pictograms
The 'Environment' pictogram (dead fish and tree) signals what?
Correct — A. The Environment pictogram warns of aquatic toxicity. Note: under OSHA HazCom this pictogram is NOT mandatory, though it is part of the UN GHS. -
GHS Pictograms
How many hazard pictograms are defined in the GHS system?
Correct — C. GHS defines nine pictograms: Health Hazard, Flame, Exclamation Mark, Gas Cylinder, Corrosion, Exploding Bomb, Flame Over Circle, Skull and Crossbones, and Environment. -
GHS Pictograms
Which GHS pictogram is NOT mandatory on labels under OSHA's Hazard Communication Standard?
Correct — C. OSHA does not regulate environmental hazards, so the Environment pictogram is not required on HazCom labels, although suppliers may include it. -
GHS Pictograms
A chemical that can cause cancer should carry which pictogram?
Correct — B. Carcinogenicity is a serious health endpoint assigned the Health Hazard silhouette pictogram, not the Exclamation Mark. -
GHS Pictograms
A spray paint can labeled flammable would most likely display which pictogram?
Correct — B. Flammable aerosols and liquids use the Flame pictogram. -
GHS Pictograms
Bleach that can damage your eyes and burn skin would carry which pictogram?
Correct — C. Substances causing serious eye damage or skin corrosion use the Corrosion pictogram. -
GHS Pictograms
Which pictogram appears on a propane or compressed-air cylinder?
Correct — A. Gases under pressure carry the Gas Cylinder pictogram (propane would also carry the Flame pictogram because it is flammable). -
GHS Pictograms
What does a black symbol inside the red diamond always sit on?
Correct — B. GHS pictograms always use a black symbol on a white background framed by the red diamond border. -
GHS Pictograms
If a chemical is both flammable and acutely toxic, how are pictograms shown?
Correct — B. A product can carry multiple pictograms — each applicable hazard gets its own pictogram on the label. -
GHS Pictograms
Which pictogram would you expect on a strong hydrogen-peroxide oxidizer solution?
Correct — A. Oxidizers such as concentrated hydrogen peroxide use the Flame Over Circle pictogram. -
GHS Pictograms
A product that is a respiratory sensitizer (can cause asthma when inhaled) uses which pictogram?
Correct — B. Respiratory sensitization is a serious health endpoint shown with the Health Hazard silhouette. (Skin sensitization, a milder endpoint, uses the Exclamation Mark.) -
GHS Pictograms
The red border of a GHS pictogram is required for what reason?
Correct — B. The bold red diamond border makes the pictogram quickly recognizable worldwide regardless of language. -
GHS Pictograms
Which of these is NOT one of the nine GHS pictograms?
Correct — B. The radiation trefoil is a separate radiological symbol and is not part of the nine GHS hazard pictograms. -
GHS Pictograms
How many specific pictograms are mandated by OSHA on chemical labels?
Correct — C. OSHA's HCS requires the use of 8 of the 9 GHS pictograms on chemical labels (the environmental hazard pictogram is not mandated by OSHA, though other agencies may require it). -
Signal Words
GHS uses how many signal words on labels?
Correct — B. GHS uses exactly two signal words: 'Danger' and 'Warning'. -
Signal Words
Which signal word indicates the MORE severe hazard category?
Correct — C. 'Danger' is used for more severe hazard categories; 'Warning' is used for less severe ones. -
Signal Words
Which signal word indicates a LESS severe hazard?
Correct — B. 'Warning' signals the less severe hazard categories; 'Danger' is reserved for the more severe ones. -
Signal Words
How many signal words may appear on a single GHS label?
Correct — B. Only one signal word appears per label. If any hazard warrants 'Danger', only 'Danger' is shown — 'Warning' is omitted. -
Signal Words
Is 'Caution' a valid GHS signal word?
Correct — B. 'Caution' is not a GHS signal word. GHS standardizes on just 'Danger' and 'Warning'. -
Signal Words
A product label reads 'Danger'. What does this tell the user?
Correct — B. 'Danger' communicates a more severe hazard than 'Warning' and should prompt extra caution. -
Signal Words
Where on a GHS label is the signal word typically placed?
Correct — B. The signal word is a required, prominent label element shown with the pictograms, hazard statements, and product identifier.
OSHA HazCom / GHS sample questions
Tap any question below to reveal the answer and a plain-English explanation.
Signal Words If a chemical has one hazard rated 'Warning' and another rated 'Danger', which signal word appears?
A. Warning
B. Danger ✓
C. Both
D. Neither
Correct — B. When multiple hazards apply, only the single most severe signal word ('Danger') is used on the label.
Hazard Classification GHS sorts hazards into which three broad groups?
A. Acute, chronic, and minor
B. Physical, health, and environmental ✓
C. Solid, liquid, and gas
D. Low, medium, and high
Correct — B. GHS classifies hazards as physical hazards, health hazards, and environmental hazards.
Safety Data Sheets (SDS) How many sections does a GHS-format Safety Data Sheet contain?
A. 8
B. 12
C. 16 ✓
D. 20
Correct — C. A GHS-aligned SDS has 16 standardized sections in a fixed order.
Label Elements How many required elements must appear on a GHS-compliant shipped container label?
A. Three
B. Four
C. Six ✓
D. Nine
Correct — C. Six required elements: product identifier, signal word, hazard statement(s), pictogram(s), precautionary statement(s), and supplier identification.
PPE & Safe Handling What does 'PPE' stand for?
A. Personal Protective Equipment ✓
B. Public Property Enclosure
C. Primary Process Engineering
D. Protective Plastic Equipment
Correct — A. PPE stands for Personal Protective Equipment — gear that protects the wearer from hazards.
Emergency & First Aid If a chemical splashes in your eyes, the first action is to:
A. Rub your eyes
B. Flush with water at an eyewash station for at least 15 minutes ✓
C. Wait and see
D. Apply ointment immediately
Correct — B. Immediate flushing with water (typically at least 15 minutes) is the standard first aid for eye contact; check the SDS and seek medical help.
HazCom Program & Right to Know OSHA's Hazard Communication Standard is sometimes called the:
A. Clean Air Act
B. Right-to-Know law ✓
C. Tax Code
D. Building Code
Correct — B. HazCom (29 CFR 1910.1200) is known as the 'Right-to-Know' standard because workers have the right to know about workplace chemical hazards.
Real Exam Practice What does GHS stand for?
A. Globally Harmonized System ✓
B. Good Health Security
C. Global Health Strategies
D. General Hazard Warning System
Correct — A. That's the right answer.
About the OSHA HazCom / GHS test
Build confidence with hazard communication and chemical safety. This study app helps workers, students, and safety trainees understand OSHA's Hazard Communication Standard (29 CFR 1910.1200) and the UN Globally Harmonized System (GHS) — the basis of the labels and safety data sheets you see on chemicals every day.
What you get
- 120+ original practice questions covering the 9 GHS pictograms, signal words (Danger/Warning), physical/health/environmental hazard classes, the 16-section Safety Data Sheet, label elements, PPE and safe handling, emergency and first aid, and the HazCom program / Right to Know.
- Plain-English explanations for every answer so you understand the reasoning.
- Timed mock exams that mirror a real test format and pass mark.
- A quick-reference guide to the 9 GHS pictograms and their meanings.
- Study by topic to focus on your weak spots.
- Available in English, Spanish, Portuguese, Chinese, and Arabic.
You will be tested on
- Hazard identification and risk control
- Required workplace procedures
- Personal protective equipment and safe practice
- Compliance, reporting and documentation
How TheoryPractice helps you pass
- Real exam-style questions with instant, detailed explanations
- Full timed mock exams that mirror the real test format
- Flashcards & quiz modes from the same question bank
- Progress tracking so you know exactly when you're ready
Topics in this question bank
Hazard identification and risk control
Required workplace procedures
Personal protective equipment and safe practice
Compliance, reporting and documentation
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