Free Associate Hazardous Materials Manager [AHMM] examination Practice Questions

Sample Practice Questions

Try these 10 sample questions from the Associate Hazardous Materials Manager [AHMM] examination practice bank. Each includes the answer and explanation. Continue with the interactive practice above to review the full question set.

1. 1A chemical produces an aqueous solution with a pH of 13 and is chemically similar to sodium hydroxide. Which basic chemical class best describes it?

   1. A. Strong acid
   2. B. Strong base
   3. C. Weak oxidizer
   4. D. Organic peroxide

   Answer: B

   Explanation: NOAA describes strong bases as chemically similar to sodium hydroxide and says, "When soluble in water they give solutions having a pH of 12 or higher." A pH of 13 meets that description.

   Reference: Bases, Strong | CAMEO Chemicals | NOAA — Reactive Group Datasheet, Description—Reactivity

2. 2Breathing chemical mist into the respiratory tract is which exposure pathway?

   1. A. Ingestion
   2. B. Inhalation
   3. C. Dermal contact
   4. D. Injection

   Answer: B

   Explanation: NIOSH defines "Inhalation: Breathing gases, vapors, particulates, dust, or mist." Mist enters by breathing, so the respiratory pathway is inhalation.

   Reference: Chemical Hazards | CDC NIOSH — Routes of Chemical Exposure

3. 3A storage layout places oxidizers beside flammable liquids with no segregation. Which change addresses the compatibility hazard?

   1. A. Move oxidizers to separate secondary containment away from flammables
   2. B. Keep both groups together but alphabetize containers
   3. C. Place flammables immediately above the oxidizers
   4. D. Use one shared spill tray for both chemical groups

   Answer: A

   Explanation: The NIH Chemical Segregation and Storage Table directs that oxidizers be stored in "secondary containment separately from combustibles and flammable materials". Segregation and separate containment address the incompatible storage arrangement.

   Reference: NIH Chemical Segregation and Storage Table — Oxidizers row, storage recommendations

4. 4An extremely hazardous substance exceeds its TPQ in a facility's inventory, and a release later occurs. Under EPCRA, which quantity determines whether the release itself triggers Section 304 emergency release notification?

   1. A. The applicable reportable quantity released
   2. B. The threshold planning quantity stored on site
   3. C. The total annual quantity purchased
   4. D. The maximum quantity on any single shelf

   Answer: A

   Explanation: EPA distinguishes the thresholds: "The reportable quantity (RQ) that triggers emergency release notification (Section 304)" concerns a release, while TPQs govern emergency planning. Exceeding an on-site TPQ does not by itself establish that a release reached its RQ.

   Reference: EPA: Relationship Between Reportable Quantities and Threshold Planning Quantities — Answer, first and second paragraphs

5. 5A facility safety plan must address how workers learn about hazardous chemicals used in their work area. Which federal standard primarily governs workplace chemical hazard communication through labels, safety data sheets, and training?

   1. A. OSHA Hazard Communication Standard
   2. B. CERCLA Superfund response provisions
   3. C. DOT Hazardous Materials Regulations
   4. D. RCRA hazardous waste listing rules

   Answer: A

   Explanation: OSHA says the standard requires employers to provide information through "a hazard communication program, labels and other forms of warning, safety data sheets, and information and training." It is the governing workplace hazard-communication framework for this plan element.

   Reference: OSHA 29 CFR 1910.1200: Hazard Communication — 29 CFR 1910.1200(b)(1)

6. 6Which chemical is listed by NOAA as an example of a strong nonoxidizing acid?

   1. A. Nitric acid
   2. B. Sodium hydroxide
   3. C. Hydrochloric acid
   4. D. Barium peroxide

   Answer: C

   Explanation: In its strong nonoxidizing acid group, NOAA lists "Hydrochloric acid, hydroiodic acid, hydrobromic acid." Nitric acid belongs to the oxidizing acid group; sodium hydroxide is a base, and barium peroxide is an oxidizer.

   Reference: Acids, Strong Non-oxidizing | CAMEO Chemicals | NOAA — Reactive Group Datasheet, Examples

7. 7Accidentally swallowing a hazardous substance corresponds to which exposure pathway?

   1. A. Injection
   2. B. Skin absorption
   3. C. Inhalation
   4. D. Ingestion

   Answer: D

   Explanation: NIOSH defines "Ingestion: Accidentally eating or drinking hazardous substances." Swallowing therefore identifies the ingestion pathway.

   Reference: Chemical Hazards | CDC NIOSH — Routes of Chemical Exposure

8. 8A facility adds 70% nitric acid to its corrosive storage area. Which storage feature is specifically recommended in the NIH chemical segregation table?

   1. A. A separate secondary container for the concentrated acid
   2. B. Placement beneath a sink near a water supply
   3. C. Direct placement on uncovered metal shelving
   4. D. Shared containment with a corrosive base

   Answer: A

   Explanation: The NIH table says, "Store concentrated Nitric acid (≥68%) and Sulfuric acid (≥93%) in a secondary container". Because 70% nitric acid meets the stated concentration, secondary containment is the indicated feature.

   Reference: NIH Chemical Segregation and Storage Table — Corrosive Acids-Inorganic row, storage recommendations

9. 9A facility stores an extremely hazardous substance in several containers across different buildings. To compare its inventory with the EPCRA TPQ, what amount should be determined?

   1. A. The total amount present at the facility at one time
   2. B. Only the largest single container
   3. C. Only the amount in the main storage building
   4. D. Only the portion released in the last day

   Answer: A

   Explanation: EPA says the owner or operator must determine "the total amount of each Extremely Hazardous Substance present at a facility at any one time, regardless of location, number of containers, or method of storage." The facility-wide amount controls the planning comparison.

   Reference: EPA Emergency Planning Under EPCRA — Emergency Planning, Regulated Substances and Facilities subsection

10. 10A facility plan addresses a hazardous-substance release that may endanger the surrounding environment and require federal response and cleanup. Which statute provides broad federal response authority for that issue?

    1. A. CERCLA
    2. B. OSHA Hazard Communication Standard
    3. C. DOT Hazardous Materials Regulations
    4. D. ISO 14001

    Answer: A

    Explanation: EPA states that CERCLA "provided broad Federal authority to respond directly to releases or threatened releases of hazardous substances that may endanger public health or the environment." That is the release response and cleanup dimension of the plan.

    Reference: EPA Superfund: CERCLA Overview — Opening overview