RETA CARO Exam Review – Refrigeration Safety Questions and Correct Answers|| GRADED A+|| LATEST UPDATE 2026

RETA CARO Exam Review – Refrigeration
Safety Questions and Correct Answers||
GRADED A+|| LATEST UPDATE 2026
10,000 PPM -CORRECTANSWER 1% concentration of Ammonia is equal to what in

PPM?



11.6 -CORRECTANSWER Ammonia is what on a PH scale?



100, 24 -CORRECTANSWER Fill in the blanks: More than _____ pounds released of

ammonia in _____ hours is a reportable release.



Thermal burns, dehydration burns, respiratory damage, and chemical burns. -

CORRECTANSWER What are the four primary types of injury that can occur due to

exposure to ammonia?



50 -CORRECTANSWER What is the Permissible Exposure Limit (PEL) set forth by

Federal OSHA for ammonia in PPM?



full faced air purifying respirator (APR) -CORRECTANSWER Fill in the blank: The PEL

tells an operator that they must put on a ____-_____ ___ _________ __________ if

they want to stay in that atmosphere.

, 300 -CORRECTANSWER What is the IDLH (immediately dangerous to life and health)

set forth by Federal OSHA for ammonia in PPM?



15 -CORRECTANSWER What is the LEL (lower explosive limit) for ammonia in

percentage?



150,000 -CORRECTANSWER What is the LEL (lower explosive limit) for ammonia in

PPM?



28 -CORRECTANSWER What is the UEL (upper explosive limit) for ammonia in

percentage?



280,000 -CORRECTANSWER What is the UEL (upper explosive limit) for ammonia in

PPM?



Health 3, Flammability 1, Reactivity 0 -CORRECTANSWER What is the NFPA diamond

for ammonia outdoors?



Health 3, Flammability 3, Reactivity 0 -CORRECTANSWER What is the NFPA diamond

for ammonia in an enclosed space?



Blue, red, yellow -CORRECTANSWER What colors correspond on the NFPA diamond

for ammonia to health, flammability, and reactivity?