RETA CARO EXAM REVIEW SET| 70+ ACTUAL
QUESTIONS & ANSWERS || LATEST 2025 UPDATE.
1. 10,000 PPM: 1% concentration of Ammonia is equal to what in PPM?
2. 11.6: Ammonia is what on a PH scale?
3. 100, 24: Fill in the blanks: More than pounds released of ammonia in
hours is a reportable release.
4. Thermal burns, dehydration burns, respiratory damage, and chemical
burns.: What are the four primary types of injury that can occur due to exposure
to ammonia?
5. 50: What is the Permissible Exposure Limit (PEL) set forth by Federal OSHA for
ammonia in PPM?
6. full faced air purifying respirator (APR): Fill in the blank: The PEL tells an
operator that they must put on a - if they
want to stay in that atmosphere.
7. 300: What is the IDLH (immediately dangerous to life and health) set forth by
Federal OSHA for ammonia in PPM?
8. 15: What is the LEL (lower explosive limit) for ammonia in percentage?
9. 150,000: What is the LEL (lower explosive limit) for ammonia in PPM?
10. 28: What is the UEL (upper explosive limit) for ammonia in percentage?
11. 280,000: What is the UEL (upper explosive limit) for ammonia in PPM?
12. Health 3, Flammability 1, Reactivity 0: What is the NFPA diamond for ammonia
outdoors?
13. Health 3, Flammability 3, Reactivity 0: What is the NFPA diamond for ammonia
in an enclosed space?
14. Blue, red, yellow: What colors correspond on the NFPA diamond for ammonia
to health, flammability, and reactivity?
15. No: Can an operator wear contact lenses at work?
16. Hydrostatic expansion: Fill in the blank: When liquid ammonia is trapped in a
vessel or pipe that is completely full, a temperature rise can cause an effect called
.
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, 17. Sulfur stick and pH or litmus paper: What are the two primary ways of finding
small ammonia leaks?
18. 15: Fill in the blank: An operator must flush the body or eyes for a minimum of
minutes when exposed to ammonia.
19. heat transfer in BTUs per time: What is tonnage?
20. PSIA: What pressure scale must be used to calculate a compression ratio?
21. 3 groups (CFCs, HCFCs, HFCs): How many groups of halocarbons are there?
22. Carbon: Fill in the blank: Organic compounds are structured around the
molecule.
23. Inorganic: Fill in the blank: compounds are usually non carbon
based.
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QUESTIONS & ANSWERS || LATEST 2025 UPDATE.
1. 10,000 PPM: 1% concentration of Ammonia is equal to what in PPM?
2. 11.6: Ammonia is what on a PH scale?
3. 100, 24: Fill in the blanks: More than pounds released of ammonia in
hours is a reportable release.
4. Thermal burns, dehydration burns, respiratory damage, and chemical
burns.: What are the four primary types of injury that can occur due to exposure
to ammonia?
5. 50: What is the Permissible Exposure Limit (PEL) set forth by Federal OSHA for
ammonia in PPM?
6. full faced air purifying respirator (APR): Fill in the blank: The PEL tells an
operator that they must put on a - if they
want to stay in that atmosphere.
7. 300: What is the IDLH (immediately dangerous to life and health) set forth by
Federal OSHA for ammonia in PPM?
8. 15: What is the LEL (lower explosive limit) for ammonia in percentage?
9. 150,000: What is the LEL (lower explosive limit) for ammonia in PPM?
10. 28: What is the UEL (upper explosive limit) for ammonia in percentage?
11. 280,000: What is the UEL (upper explosive limit) for ammonia in PPM?
12. Health 3, Flammability 1, Reactivity 0: What is the NFPA diamond for ammonia
outdoors?
13. Health 3, Flammability 3, Reactivity 0: What is the NFPA diamond for ammonia
in an enclosed space?
14. Blue, red, yellow: What colors correspond on the NFPA diamond for ammonia
to health, flammability, and reactivity?
15. No: Can an operator wear contact lenses at work?
16. Hydrostatic expansion: Fill in the blank: When liquid ammonia is trapped in a
vessel or pipe that is completely full, a temperature rise can cause an effect called
.
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, 17. Sulfur stick and pH or litmus paper: What are the two primary ways of finding
small ammonia leaks?
18. 15: Fill in the blank: An operator must flush the body or eyes for a minimum of
minutes when exposed to ammonia.
19. heat transfer in BTUs per time: What is tonnage?
20. PSIA: What pressure scale must be used to calculate a compression ratio?
21. 3 groups (CFCs, HCFCs, HFCs): How many groups of halocarbons are there?
22. Carbon: Fill in the blank: Organic compounds are structured around the
molecule.
23. Inorganic: Fill in the blank: compounds are usually non carbon
based.
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