questions and complete solution 2026\2027
update
1. What is the highest level of respiratory and skin protection defined by
EPA/OSHA for hazardous materials response?
A. Level B
B. Level C
C. Level A
D. Level D
Answer C
2. Level A protection consists of which combination of equipment?
A. SCBA and splash-protective clothing
B. Positive-pressure SCBA and totally encapsulating chemical-protective suit
C. Air-purifying respirator and chemical-resistant coveralls
D. Standard work clothes and dust mask
Answer B
3. Level B protection provides the same level of respiratory protection as Level A,
but less protection against which type of exposure?
A. Radiological
B. Chemical vapors and gases contacting the skin
C. Biological
D. Thermal
Answer B
,4. Which level of protection is appropriate when the type and concentration of
airborne substances are known and the criteria for using air-purifying respirators
are met?
A. Level A
B. Level B
C. Level C
D. Level D
Answer C
5. Level D protection is best described as:
A. A totally encapsulating suit with SCBA
B. A splash suit with APR
C. Standard work clothes with minimal chemical resistance
D. Structural firefighting protective ensemble
Answer C
6. The breakthrough time of a chemical-protective garment refers to:
A. The time it takes to don the garment
B. The elapsed time until the chemical is detected on the inside of the material
C. The time required to decontaminate the garment
D. The shelf life of the garment
Answer B
7. Permeation is defined as:
A. The passage of a chemical through closures, zippers, or seams
B. The physical passage of a chemical through the material on a molecular level
C. The degradation of the suit material by chemical contact
D. The absorption of chemical into the outer layer only
, Answer B
8. Penetration differs from permeation in that penetration is:
A. Movement of chemical at the molecular level through the material
B. Movement of chemical through closures, seams, zippers, or pinholes
C. The chemical reacting with the suit material
D. The vapor pressure of the chemical
Answer B
9. Degradation of chemical-protective clothing occurs when:
A. The chemical physically damages or alters the suit material
B. The chemical passes through the suit material
C. The suit becomes wet from decontamination water
D. The suit is stored improperly
Answer A
10. Which factor is MOST important when selecting chemical-protective clothing?
A. Cost of the garment
B. Compatibility with the specific chemical hazard present
C. Color of the garment
D. Weight of the garment
Answer B
11. Vapor-protective clothing is required when:
A. Splashes of liquid are the only hazard
B. Gases and vapors are present and skin absorption is a hazard
C. The atmosphere is oxygen-deficient only
D. Particulates are the only hazard