These questions are derived from the LDS Preparedness Manual [links to PDF File]. Specifically, the “Oxygen Absorbers” section (pages 144-150). You can find the answers to this quiz on my Facebook page. Good luck!
Q1. How do oxygen abosorbers work:
a) the calcium silicate inside gels thereby remove excess oxygen
b) the sodium chloride inside binds to the oxygen
c) the iron filings inside rust to form iron oxide
d) the wish fair hiding inside makes the oxygen magically disappear
e) there are no such things as magical fairies!
Q2. Which of the following questions should you ask before using an oxygen absorber:
a) Is the food I want to put by particularly oxygen sensitive for the time I want to keep it in storage?
b) Will the packaging I want to use seal air-tight and is the packaging material itself a good gas barrier?
c) What is the volume of the container and how much air volume remains after I’ve filled it with food?
d) all of the above
e) none of the above
Q3. How can falling temperatures be bad for food storage inside a container:
a) it may have caused trapped moisture to reach its dew point and condense on your food
b) it may cause the container’s seal to rupture
c) if the storage container is porous to water, falling temperatures may cause more water to migrate inside
d) there are no problems with falling temperatures
Q4. Which of the following is a potential solution to avoiding excessive moisture inside a container:
a) only pack foods where it is most humid in order to allow the food to acclimate to the surrounding environment
b) only package foods in a dry environment and do not allow extreme temperature swings in storage areas
c) I can’t think of any others
d) really, I can’t think of anything else
Q5. What chemicals are in indicating silica gel that “turn color” to show when the gel has absorbed about as much moisture as it can hold:
a) calcium silcate
b) sodium chloride
c) acetic acid
d) cobalt chloride
Q6. In a pinch, which of the following materials could be used to make your own dessicant:
a) gypsum from drywall
b) food scraps
c) clean carpeting