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8-33.
Which of the following chemicals
is used commonly as a silver-halide
solvent?
8-34.
8-35.
8-36.
8-37.
1.
Acetic acid
2.
Sodium thiosulfate
3.
Sodium sulfite
4.
Borax
Which of the following chemicals
is added to fixing solutions to
prevent sulfurization and
discoloration as well as aiding
in prevention of stains?
1.
Sodium thiosulfate
2.
Ammonium thiosulfate
3.
Sodium sulfite
4.
Potassium alum
Which of the following films
requires the longest fixing time?
1.
Very fine grain
2.
Fine grain
3.
Medium grain
4.
Coarse grain
You used an undeveloped piece of
film to determine the proper fixing
time.
The film took 2 minutes to
clear.
After development, what
length of time, in minutes, should
you fix the same type of film?
1. 1
2. 2
3. 8
4. 4
A fresh fixer used to process
black-and-white film takes
4 minutes to cleat- a piece of
undeveloped film.
The fixer
should be considered exhausted
when it takes a total of how many
minutes to clear undeveloped film?
1. 5
2. 6
3. 7
4. 8
8-38.
The purpose of washing film is
to remove which of the following
elements?
1.
Black metallic silver
2.
Fixer
3.
Developer
4.
Silver halides
8-39.
For black-and-white film, the
maximum recommended wash water
is what temperature, in degrees
Fahrenheit?
1.
65°F
2.
70°F
3.
75°F
4.
80°F
8-40.
The time required to wash negatives
in a large tank is 20 minutes.
However,
halfway through the wash
cycle a PH Striker from the deck
department puts his fixer-covered
hand into the wash tank.
You
should wash the negatives what
additional amount of time?
1.
5 minutes
2.
3.
10 minutes
20 minutes
4.
30 minutes
8-41.
The final stage in film processing
is what step?
1.
Drying
2.
Washing
3.
Fixing
4.
Captioning
8-42.
Which of the following statements
is correct regarding the wetting
agent used in film processing?
1.
It promotes even drying
2.
It helps wash the film
because it is made of a
soaplike substance
3.
It retards vigorous drying
that causes film curl
4.
It shrinks the swollen gelatin
60

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