2025/2026 AAMI SCIENCE REVIEW AND AAMI COMPREHENSIVE
SCIENCE REVIEW ACTUAL EXAMS TEST BANK 300 QUESTIONS AND
CORRECT DETAILED ANSWERS PLUS RATIONALES|ALREADY GRADED
A+(REAL DEAL)
Question 1
According to OSHA, what is the correct procedure to clean up a formaldehyde spill?
A) Dilute with water and mop up.
B) Absorb with sand and incinerate.
C) Add ammonia and wipe up.
D) Ventilate the area and allow it to evaporate.
E) Cover with sodium bicarbonate.
Correct Answer: C) Add ammonia and wipe up.
Rationale: Ammonia neutralizes formaldehyde by reacting with it to form hexamethylene
tetramine, a harmless crystalline solid. This chemical neutralization is the OSHA-
recommended first step before physically wiping up the spill, as it reduces the hazardous
vapors.
Question 2
What is the Time-Weighted Average (TWA) permissible exposure limit for formaldehyde
(HCHO) over an 8-hour period?
A) 0.5 ppm
B) 0.75 ppm
C) 2.0 ppm
D) 5.0 ppm
E) 10.0 ppm
Correct Answer: B) 0.75 ppm
Rationale: OSHA sets the TWA for formaldehyde at 0.75 parts per million. An employee's
average exposure in any 8-hour work shift shall not exceed this limit.
Question 3
What is the Action Level for formaldehyde exposure, which triggers the need for increased
monitoring and employee training?
A) 0.25 ppm
, B) 0.5 ppm
C) 0.75 ppm
D) 1.0 ppm
E) 2.0 ppm
Correct Answer: B) 0.5 ppm
Rationale: The Action Level is set at 0.5 ppm as an 8-hour time-weighted average. If
monitoring reveals exposure at or above this level, the employer must initiate additional
compliance activities, such as periodic monitoring and medical surveillance, even if the
exposure is below the full TWA.
Question 4
What is the Short-Term Exposure Limit (STEL) for formaldehyde (HCHO) over a 15-minute
period?
A) 0.5 ppm
B) 0.75 ppm
C) 1.0 ppm
D) 2.0 ppm
E) 5.0 ppm
Correct Answer: D) 2.0 ppm
Rationale: The STEL is the maximum concentration to which workers can be exposed for a
short period (15 minutes) without suffering from adverse health effects. For formaldehyde,
this limit is 2.0 ppm.
Question 5
The postmortem, intravascular discoloration that results from the settling of blood into the
dependent parts of the body is known as:
A) Livor Mortis
B) Algor Mortis
C) Rigor Mortis
D) Hypostasis
E) Dehydration
Correct Answer: D) Hypostasis
SCIENCE REVIEW ACTUAL EXAMS TEST BANK 300 QUESTIONS AND
CORRECT DETAILED ANSWERS PLUS RATIONALES|ALREADY GRADED
A+(REAL DEAL)
Question 1
According to OSHA, what is the correct procedure to clean up a formaldehyde spill?
A) Dilute with water and mop up.
B) Absorb with sand and incinerate.
C) Add ammonia and wipe up.
D) Ventilate the area and allow it to evaporate.
E) Cover with sodium bicarbonate.
Correct Answer: C) Add ammonia and wipe up.
Rationale: Ammonia neutralizes formaldehyde by reacting with it to form hexamethylene
tetramine, a harmless crystalline solid. This chemical neutralization is the OSHA-
recommended first step before physically wiping up the spill, as it reduces the hazardous
vapors.
Question 2
What is the Time-Weighted Average (TWA) permissible exposure limit for formaldehyde
(HCHO) over an 8-hour period?
A) 0.5 ppm
B) 0.75 ppm
C) 2.0 ppm
D) 5.0 ppm
E) 10.0 ppm
Correct Answer: B) 0.75 ppm
Rationale: OSHA sets the TWA for formaldehyde at 0.75 parts per million. An employee's
average exposure in any 8-hour work shift shall not exceed this limit.
Question 3
What is the Action Level for formaldehyde exposure, which triggers the need for increased
monitoring and employee training?
A) 0.25 ppm
, B) 0.5 ppm
C) 0.75 ppm
D) 1.0 ppm
E) 2.0 ppm
Correct Answer: B) 0.5 ppm
Rationale: The Action Level is set at 0.5 ppm as an 8-hour time-weighted average. If
monitoring reveals exposure at or above this level, the employer must initiate additional
compliance activities, such as periodic monitoring and medical surveillance, even if the
exposure is below the full TWA.
Question 4
What is the Short-Term Exposure Limit (STEL) for formaldehyde (HCHO) over a 15-minute
period?
A) 0.5 ppm
B) 0.75 ppm
C) 1.0 ppm
D) 2.0 ppm
E) 5.0 ppm
Correct Answer: D) 2.0 ppm
Rationale: The STEL is the maximum concentration to which workers can be exposed for a
short period (15 minutes) without suffering from adverse health effects. For formaldehyde,
this limit is 2.0 ppm.
Question 5
The postmortem, intravascular discoloration that results from the settling of blood into the
dependent parts of the body is known as:
A) Livor Mortis
B) Algor Mortis
C) Rigor Mortis
D) Hypostasis
E) Dehydration
Correct Answer: D) Hypostasis
