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United States Department of Agriculture

Agricultural Research Service

Liquid Nitrogen Quiz
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Liquid Nitrogen Quiz


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Liquid nitrogen, when returned to the gaseous state, can displace oxygen from the air and can create an oxygen-deficient atmosphere under the right conditions
True
False

Oxygen concentration below 19.5% is considered an oxygen deficient environment
True
False

Asphyxia develops slowly as the oxygen content of air is gradually reduced from 21%.
True
False

The victim will not be aware of a problem and generally will not recognize the symptoms of gradual asphyxia from decreasing oxygen levels.
True
False

Liquid nitrogen can support life.
True
False

Always wear safety equipment, including heavy loose fitting leather or cryogenic gloves, and eye and face protection
True
False

If liquid nitrogen is not used regularly, the vessel will be still be filled indefinitely.
True
False

Storage of liquid containers in cold rooms will slow down the liquid to gas conversion.
True
False

If there is a large spill or rupture of a liquid nitrogen container, explain why an evacuation must immediately take place



NOTE When finished, print out a copy and return it to your Safety Officer. Or...

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New York: Ithaca & Geneva
Maine: Orono, Presque Isle, & Franklin
Pennsylvania: University Park
West Virginia: Beaver
West Virginia: Kearneysville, Leetown

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Last Modified: 2/2/2010
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