Maryland Asbestos Worker Certification
Exam Practice Questions And Correct
Answers (Verified Answers) Plus
Rationale 2026 Q&A| Instant Download
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1. Which federal regulation primarily governs asbestos handling and
emissions during abatement activities in the United States?
A. Clean Air Act Amendments of 1990
B. OSHA 29 CFR 1910.1200 Hazard Communication Standard
C. EPA NESHAP Asbestos Regulations (40 CFR Part 61)
D. Safe Drinking Water Act
Correct Answer: C
The EPA NESHAP asbestos regulations under 40 CFR Part 61
specifically control asbestos emission standards during demolition
and renovation activities to protect public health.
2. The primary health risk associated with asbestos exposure is:
A. Acute chemical burns
B. Asbestosis, lung cancer, and mesothelioma
C. Skin irritation and dermatitis only
, D. Liver failure
Correct Answer: B
Asbestos fibers, when inhaled, can cause serious long-term
respiratory diseases including asbestosis, lung cancer, and
mesothelioma.
3. What is the most effective respiratory protection during asbestos
removal?
A. Surgical mask
B. Dust mask
C. N95 filtering facepiece respirator only
D. Powered Air-Purifying Respirator (PAPR) or full-face respirator with
HEPA filters
Correct Answer: D
A PAPR or full-face respirator equipped with HEPA filters provides the
highest level of protection against airborne asbestos fibers.
4. Before beginning asbestos abatement, the first required step is:
A. Wetting the material
B. Setting up containment and critical barriers
C. Removing all insulation immediately
D. Starting demolition
Correct Answer: B
Establishing proper containment prevents asbestos fibers from
spreading to uncontaminated areas before work begins.
5. Which material is most likely to contain asbestos?
A. Vinyl flooring manufactured after 2005
B. Cement board installed before 1980
C. Aluminum siding
D. Plastic piping
Correct Answer: B
, Older cement board products frequently contained asbestos fibers for
strength and heat resistance.
6. HEPA filters are designed to capture particles of what minimum
efficiency?
A. 85%
B. 95%
C. 99.97% at 0.3 microns
D. 100% of all particles
Correct Answer: C
HEPA filters are certified to remove 99.97% of particles 0.3 microns or
larger, including asbestos fibers.
7. Which practice is required when removing asbestos-containing
materials?
A. Dry scraping without control
B. Using compressed air to clean debris
C. Wet methods to reduce dust
D. Sweeping with dry brooms
Correct Answer: C
Wet methods suppress dust generation, reducing airborne asbestos
fiber release during removal.
8. A regulated area for asbestos work must be:
A. Open to all workers with warning signs
B. Restricted with warning signs and access control
C. Accessible only during lunch breaks
D. Unmarked to avoid panic
Correct Answer: B
Regulated areas must be clearly marked and restricted to trained and
authorized personnel only.
Exam Practice Questions And Correct
Answers (Verified Answers) Plus
Rationale 2026 Q&A| Instant Download
1. Which federal regulation primarily governs asbestos handling and
emissions during abatement activities in the United States?
A. Clean Air Act Amendments of 1990
B. OSHA 29 CFR 1910.1200 Hazard Communication Standard
C. EPA NESHAP Asbestos Regulations (40 CFR Part 61)
D. Safe Drinking Water Act
Correct Answer: C
The EPA NESHAP asbestos regulations under 40 CFR Part 61
specifically control asbestos emission standards during demolition
and renovation activities to protect public health.
2. The primary health risk associated with asbestos exposure is:
A. Acute chemical burns
B. Asbestosis, lung cancer, and mesothelioma
C. Skin irritation and dermatitis only
, D. Liver failure
Correct Answer: B
Asbestos fibers, when inhaled, can cause serious long-term
respiratory diseases including asbestosis, lung cancer, and
mesothelioma.
3. What is the most effective respiratory protection during asbestos
removal?
A. Surgical mask
B. Dust mask
C. N95 filtering facepiece respirator only
D. Powered Air-Purifying Respirator (PAPR) or full-face respirator with
HEPA filters
Correct Answer: D
A PAPR or full-face respirator equipped with HEPA filters provides the
highest level of protection against airborne asbestos fibers.
4. Before beginning asbestos abatement, the first required step is:
A. Wetting the material
B. Setting up containment and critical barriers
C. Removing all insulation immediately
D. Starting demolition
Correct Answer: B
Establishing proper containment prevents asbestos fibers from
spreading to uncontaminated areas before work begins.
5. Which material is most likely to contain asbestos?
A. Vinyl flooring manufactured after 2005
B. Cement board installed before 1980
C. Aluminum siding
D. Plastic piping
Correct Answer: B
, Older cement board products frequently contained asbestos fibers for
strength and heat resistance.
6. HEPA filters are designed to capture particles of what minimum
efficiency?
A. 85%
B. 95%
C. 99.97% at 0.3 microns
D. 100% of all particles
Correct Answer: C
HEPA filters are certified to remove 99.97% of particles 0.3 microns or
larger, including asbestos fibers.
7. Which practice is required when removing asbestos-containing
materials?
A. Dry scraping without control
B. Using compressed air to clean debris
C. Wet methods to reduce dust
D. Sweeping with dry brooms
Correct Answer: C
Wet methods suppress dust generation, reducing airborne asbestos
fiber release during removal.
8. A regulated area for asbestos work must be:
A. Open to all workers with warning signs
B. Restricted with warning signs and access control
C. Accessible only during lunch breaks
D. Unmarked to avoid panic
Correct Answer: B
Regulated areas must be clearly marked and restricted to trained and
authorized personnel only.
