7-44.
What is the most important reason
for ensuring that photographic
chemicals are mixed properly?
1.
using improperly mixed
chemicals is always hazardous
to the user’s health
2.
Improperly mixed chemicals may
ruin the film from an important
mission
3.
The mixing equipment may be
damaged
7-45.
The storage of unmixed chemicals
should be at what approximate
temperature and relative humidity,
respectively?
1.
20°F; 68 percent
2.
40°F; 75 percent
3.
68°F; 20 percent
4.
75°F; 40 percent
7-46.
Containers made from what material
are best for storing liquid
developer?
1.
Hard rubber
2.
Plastic
3.
Glass
4.
Stainless steel
7-47.
Air space should never be left in
a large bottle used for storing
developer replenisher.
1.
True
2.
False
7-48.
Floating lids are used for storage
of large volumes of solution in
tanks for what primary purpose?
1.
To prevent dust from settling
on the surface of the solution
2.
To prevent water in the
solution from evaporating
3.
To prevent unauthorized use
of the solution
4.
To protect the solution from
aerial oxidation
7-49.
7-50.
7-51.
7-52.
Which of the following materials
is NOT suitable for a photographic
chemical storage tank?
1.
Aluminum
2.
Glass
3.
316 Stainless Steel
4.
Polyethylene
When washed well between uses,
wooden paddles make excellent
chemical mixing tools.
1.
True
2.
False
The curved surface at the top of
a solution is known by what term?
1.
Convexation
2.
Concavation
3.
Meniscus
4.
Mantissa
An increase in temperature has
what effect, if any, on chemical
action?
1.
It increases
2.
It decreases
3.
None
Learning Objective:
Identify
items of equipment used in Navy
imaging facilities to test or
verify chemical solutions.
7-53.
What instrument is used to
measure the specific gravity
of a solution?
1.
Densitometer
2.
pH meter
3.
Hydrometer
4.
Thermometer
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