Practice status

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Build a practice round

U.S. profile only · 24 original practice questions. Alert others, evacuate and call 911 when safety is uncertain. Follow workplace emergency plans. Equipment questions assume a permitted, trained response to a small contained fire with a clear exit; they never authorize firefighting.

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Answer recorded. Corrections will appear after the last question.

Review what to practice next

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This is a curated learning review, not a certificate, compliance assessment or authorization to fight fires. It cannot replace required education or practical training. U.S. federal workplace and household guidance checked 11 September 2026; local rules and equipment instructions may add requirements.

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No missed answers in this round. The same response limits still apply.

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Missed answer review

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Topic performance

Which safety topics need another look? Counts describe this round only; topics have different numbers of questions.

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Answer ledger

Question ID Prompt Topic Your answer Correct answer Outcome Explanation Source Copy
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Smoke Detector Placement Calculator Plan preliminary smoke alarm locations for bedrooms, sleeping areas and each level with purchase needs plus cooking, age and accessibility checks.
Home Fire Escape Planning Quiz Check your home fire escape planning knowledge with 28 original U.S.-based questions, explanations and focused practice on missed answers.
Home Electrical Safety Quiz Practice recognizing U.S. home electrical hazards with 24 scenarios and explanations of safer choices and when to seek qualified help.
Home Emergency Preparedness Quiz Practice U.S. home emergency decisions with 32 original questions and explanations to help you review gaps in preparedness knowledge.

A fire beside an extinguisher can still require immediate evacuation. Smoke, a threatened escape route or a workplace evacuation rule takes priority over choosing a cylinder. In a U.S. emergency, uncertainty about safe control is a reason to alert others, leave by a safe route and call 911 from safety, not to try an extinguisher first.

Fire extinguisher selection matches equipment to the burning material and any electrical hazard. A fire class identifies the kind of hazard. The extinguishing agent is the substance released to control combustion. Letters on an extinguisher identify its approved fire classes, while numerical ratings describe performance in standardized tests. Neither the letters nor the numbers establish that a particular person can safely approach a real fire.

U.S. class Hazard Representative situation
A Ordinary combustible materials Burning paper, wood or cloth.
B Flammable or combustible liquids and flammable gases A gasoline spill fire, distinct from cooking oil burning in an appliance.
C Electrically energized equipment Burning equipment that remains live and requires a nonconductive agent.
D Combustible metals Burning magnesium shavings.
K Cooking oils and fats in cooking appliances Burning oil in a commercial deep fryer.

Multipurpose means suitability for several listed classes, not every fire. Metal hazards can require an agent matched to the particular metal, and cooking-appliance fires need their own equipment and procedures. A cylinder's appearance is not a substitute for its label and instructions. These letters follow the U.S. convention and should not be assumed to mean the same thing in another country.

At work, the emergency action plan determines whether employees must evacuate or whether specified, trained employees may use extinguishers. An available extinguisher does not change that assignment. For a household fire, any consideration of extinguisher use depends on a small, contained fire, protection from toxic smoke, a clear escape route and a trained person who can physically operate the equipment. Others must already be alerted and the fire department called.

Recognizing a class label is useful preparation, but it does not demonstrate practical fire-response skill. Classroom knowledge cannot replace equipment-specific training, an employer's authorization or a safe escape plan.

How to Use This Tool:

The default round uses U.S. • all topics, eight questions and feedback after each answer. All 24 original questions are text-based, with four choices per question.

  1. Choose Context or focus for a broad round, household or workplace review, or a narrower equipment or response-limit focus. Select a Question count offered for that pool.
  2. Choose Feedback. After each answer reveals the correction and explanation before you advance. At the end of the round records each choice without revealing correctness until the completed review.
  3. Enter a Replay seed under Advanced when you need a repeatable round. A blank entry uses fire-practice-1, not a new random seed. Seeds allow up to 128 characters; an overlong entry falls back to the default with a notice. Keep the settings, seed and question-bank version unchanged to reproduce the questions and option order.
  4. Select Start practice, then choose one answer for each question. Selecting an answer records and locks it immediately. Use Next question to continue; there is no skipped-question or early-finish result.
    If Saved attempt unavailable appears, select Start a clean attempt and begin again. The saved attempt has not been restored.
  5. Open View results after the final answer. Read the Missed answer review and the full Answer ledger before choosing another round.

Interpreting Results:

During a round, Practice status and the progress percentage count recorded answers, not correct answers. At completion, the headline changes to correct answers out of questions selected. A Perfect round means no missed answers in that attempt. There is no pass mark, certification threshold or fire-response readiness rating.

The Answer ledger pairs each prompt with your answer, the keyed answer, its explanation and source information. Read the prompt as well as the correction: some questions ask which action should be rejected, so an answer marked Correct can name an unsafe action.

Topic performance shows counts of Correct and Missed answers. The full bank has six Response limits questions, six Fire classes questions, and four each for Equipment limits, Household safety and Workplace preparation. Short rounds need not balance these topics. Review focus identifies a topic with the most misses, not a validated ranking of your abilities. A topic that was not sampled has not been assessed.

Retry missed starts a new attempt containing only wrong answers from the completed round. Replay same seed repeats the questions and option order with fresh responses. Try a new seed uses another seed for the same pool, so questions from earlier rounds may reappear. A full-pool round still contains the same pool's questions. There is no missed-answer retry after a perfect round.

If the topic chart is unavailable, the answer ledger remains usable and the topic-count CSV remains available. Retry chart attempts to load the chart again.

Technical Details:

Extinguishing agents act by cooling fuel, restricting oxygen or interrupting combustion's chemical reaction. Their interaction with the fuel matters. An agent that cools burning wood can be dangerous around live equipment or a burning liquid, so equipment matching must respect both the listed classes and the agent's limitations.

Matching equipment to the hazard

Equipment or marking What it establishes Important exclusion or condition
Ordinary air-pressurized water extinguisher Class A use, with cooling as the main effect. Ordinary water can conduct electricity and can spread burning liquid. It is not a suitable substitute for the required electrical or liquid-fire equipment.
A:B:C marking Suitability for the listed A, B and C hazards. Those letters do not establish Class D metal compatibility or Class K cooking-appliance suitability.
Class D agent Combustible-metal protection within its approved scope. The agent must suit the particular metal. Multipurpose dry chemical and specialized metal-fire powder are not interchangeable.
Class K rating Protection for cooking oils and fats in cooking appliances. A portable extinguisher does not replace the kitchen's fixed-suppression procedures.

The incipient-stage boundary

The Occupational Safety and Health Administration (OSHA) defines an incipient-stage fire as a beginning fire controllable with portable extinguishers, Class II standpipes (small-diameter fire-hose systems) or small hose systems without protective clothing or breathing apparatus. A fire whose control requires either is outside that definition. The definition is a limit on the kind of response being discussed, not an instruction to approach a fire to test its controllability.

Equipment-selection scenarios assume a permitted, trained response to a small, contained fire with a clear exit. Evacuation instructions, unsafe smoke, a threatened exit or a spreading fire take priority over agent matching. Correctly identifying the fuel does not remove those conditions.

Workplace education and equipment care

OSHA's general-industry rule, 29 CFR 1910.157, separates employee education and training from equipment inspection and maintenance. Which duties apply depends on extinguisher provision and the workplace's emergency policy. These intervals are not a household maintenance schedule or a complete compliance checklist.

Duty Timing or condition Provision
General education when extinguishers are provided for employee use At initial employment and at least annually afterward. 1910.157(g)(1) and (2)
Appropriate-equipment training for designated users At initial assignment and at least annually afterward. 1910.157(g)(3) and (4)
Visual inspection Monthly. 1910.157(e)(2)
Maintenance check Annually, separately from visual inspection. 1910.157(e)(3)
Extinguisher condition Maintained fully charged and operable, in its designated place except during use. 1910.157(c)(4)

Workplace selection and distribution depend on anticipated fire classes and the size and degree of the hazard. Hydrostatic pressure testing has separate equipment-specific requirements; an annual maintenance check is not a substitute for that testing.

Practice score, accuracy and progress

Each question has one keyed answer worth one point. Any other choice earns zero, with no partial credit, negative marking or topic weighting. Let C be correct answers, R be recorded answers and N be the number of questions selected for the current round. C, R and N are whole-number counts, with N greater than zero and 0 ≤ C ≤ R ≤ N. The score ranges from zero to N points. It counts correct answers, while progress counts all recorded answers.

Score points = C Accuracy (%) = 100×CN Progress (%) = 100×RN

Unanswered questions stay in the denominator N, but are not counted as wrong or included in missed-answer practice. Completion requires a recorded answer for every selected question. Accuracy is calculated without intermediate rounding. The visible progress percentage rounds to the nearest whole percent, with half-percent ties upward; the completed headline uses the exact correct/total count.

For example, one correct answer recorded in an eight-question round gives 12.5% accuracy and 12.5% progress. The progress display rounds to 13%. There are still seven unanswered questions, zero wrong answers and no completed review.

Question selection is seeded and without replacement within the chosen pool, so a question does not repeat inside one round. The seed controls reproducibility, not topic balance. Scores from different pools, different question counts or missed-only retries describe different sets of questions and should not be treated as interchangeable measures of proficiency.

Limitations and Privacy:

The question bank is dated 11 September 2026 and uses a curated selection of U.S. workplace and household guidance. Its questions are independently authored, not official agency questions. It is not a complete fire-safety course, a site assessment or a substitute for required education and practical training. Current local requirements, the workplace plan and the actual equipment instructions still need to be checked.

Scoring runs in your browser, but saved-attempt information is carried in the page URL. That information includes the setup, seed, recorded choices and current place in the round, including partially completed attempts. Someone opening a compatible saved link can restore those choices. The address can enter browser history or be transmitted when it is loaded or shared.

The chart also loads external resources when needed, so local scoring is not a promise of fully offline operation or no network activity. Change setup clears the current attempt, not previously shared links or browser history. Saved links are not a private, account-based progress record; avoid putting identifying information in the replay seed.

Worked Examples:

Three misses in a full household round

Select U.S. household • mixed review and 13 questions. A completed attempt with 10 correct answers shows 10/13 and three answers needing review. Progress is 100% because every question has been answered. Choosing Retry missed creates a new three-question round, even though the normal household setup offers 4, 8 or 13. Its result describes those three questions, not an updated score for the original 13.

An unsafe action that is the correct quiz answer

The home-cooking question asks which action should be rejected for a burning pan of oil. Selecting “Pour water into the burning oil” is marked Correct because it identifies the dangerous action to reject. Never use water on burning cooking oil. Only when it can be done safely, slide a lid into place over a small pan fire and turn off the heat without moving the pan, keeping it covered until cool. When safety is uncertain, alert others, leave and call 911 from safety.

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