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Free EHS quiz: risk prevention, fire safety, hazard pictograms, PPE, ATEX, waste, plus real-life scenarios to think about. Every answer is explained.
Start this quiz →🖨️ Printable version (20 questions + answers)
Written by a QHSE director with more than 25 years of industrial experience, this quiz covers the essentials of environment, health and safety at work: risk prevention, fire safety, signs and hazard pictograms, chemicals, lockout, waste and major industrial disasters. Real-life scenarios also get you thinking: what should you do about a near miss, PPE that nobody wears, or an investigation that concludes “human error”? Ideal for a toolbox talk or to test your reflexes.
This quiz currently has 41 questions, ranging from easy to hard, available in French, English and Spanish when the Spanish translation is available.
Warm up before the quiz with these 8 trivia questions and their explained answers: click a question to reveal the answer.
Answer: Eliminating the risk at source. This is the hierarchy of prevention: first avoid or eliminate the risk, then reduce it with collective protection, and only as a last resort protect each person with PPE. A helmet is no substitute for a guardrail.
Answer: Leaving a situation of serious and imminent danger without penalty. An employee who has reasonable grounds to believe a situation poses a serious and imminent danger to their life or health must alert the employer and may withdraw, without loss of pay or sanction, provided they do not put anyone else at risk.
Answer: An exit or emergency equipment. Green is the colour of safety and rescue: emergency exits and escape routes, first-aid kits, safety showers. Firefighting equipment, by contrast, is marked in red.
Answer: Controlling hot work (welding, grinding…) outside designated areas. A spark from a grinder can smoulder for hours before starting a fire. The permit sets out precautions before, during and after the work, including a fire watch once it is finished.
Answer: Flammable liquids (petrol, solvents). A = solids, B = liquids and liquefiable solids, C = gases, D = metals, F = cooking oils and fats. Throwing water on a burning chip pan causes a fireball: that is why class F exists.
Answer: Ammonium nitrate. This very common fertiliser is stable… until it is wrongly mixed or contaminated. The AZF disaster, France's worst since the war, led to the 2003 law on technological risks and to prevention plans around industrial sites.
Answer: Indirect emissions across its whole value chain (purchases, transport, product use…). Scope 1 = direct emissions, scope 2 = purchased energy, scope 3 = everything else upstream and downstream. For many companies it is by far the largest share: a carmaker emits mostly… when its customers drive.
Answer: One thousand hours worked. Severity rate = days lost × 1,000 / hours worked. It complements the frequency rate (lost-time accidents per million hours): one tells you how many accidents, the other how serious they are.
33 more questions are waiting for you in the quiz!
⚠️ This quiz is for entertainment purposes only, written by an enthusiast, not a professional expert: always verify information with an official source before acting on it. Learn more.