Basic Photography Course

7-65.

You have set up an impeller type of
mixer to mix a developer solution,
but you have adjusted the clamp

improperly so the shaft is vertical
and in the center of the container.

What is the most probable end

result?

The motor bearings are damaged

Too much air was whipped into

the solution

The mixer vibrated enough to
mix the chemicals sufficiently

The solution was churned from

top to bottom, rather than from

bottom to top

7-66.

How many degrees Celsius equate
to 68°F?

10°C

20°C

30°C

40°C

7-67.

You are mixing a developing
solution and the directions call
for water at 23.8°C. This is equal
to how many degrees Fahrenheit?

18.75°F

37.50°F

75.00°F

125.50°F

7-68.

You are preparing a working
solution of developer from a stock
solution.

The instructions call

for 1 part of stock solution and
3 parts water.

You need a total

of 1 gallon of working solution.

What amount of water, in ounces,

should you add to the solution?

1. 32
2. 64
3. 96
4.

128

7-69.

For adequate ventilation in a
chemical mixing area, there should
be one complete air change every

15 minutes

30 minutes

3 minutes

45 minutes

7-70.

It is permissible to mix photo-
graphic chemicals in a photographic
print room that has adequate

ventilation.

True

False

7-71.

You need 32 ounces of developer
solution.

The only size package

of dry, prepackaged chemicals you

have on hand makes 128 ounces.

Should you mix the entire package
to make 128 ounces and, if so, why?

Yes; when only part of the
package is mixed, some of the

ingredients may be left out
of the resulting solution

Yes; when only part of the
package is mixed, the resulting

solution will not develop film

No; dry, packaged chemicals are
homogenized

No; dry, packaged chemicals are

formulated to be mixed either
in part or in whole

7-72.

You should follow what procedure

when mixing chemicals?

Add water to dry chemicals
and acid to water

Add dry chemicals to water
and acid to water

Add water to dry chemicals
and water to acid

Add dry chemicals to water
and water to acid

Learning Objective:

Recognize

safety precautions required in
chemical mixing areas.

7-73.

Labels on chemical storage tanks

must include the name of the

solution, hazardous chemicals
contained, the name of the person

who mixed it, and what other

information?

The water-mixing temperature

The date mixed

The antidote

The name of the chemical-mixing

supervisor

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Basic Photography Course

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DOFMaster for Windows On-line Depth of Field Calculator DOFMaster for Mobile Devices On-line Depth of Field Table Hyperfocal Distance Chart Articles FAQ Recommended Books Support Contact Links Home As an Amazon Associate I earn from qualifying purchases.	contents <- previous page next page -> 7-65. You have set up an impeller type of mixer to mix a developer solution, but you have adjusted the clamp improperly so the shaft is vertical and in the center of the container. What is the most probable end result? 1. The motor bearings are damaged 2. Too much air was whipped into the solution 3. The mixer vibrated enough to mix the chemicals sufficiently 4. The solution was churned from top to bottom, rather than from bottom to top 7-66. How many degrees Celsius equate to 68°F? 1. 10°C 2. 20°C 3. 30°C 4. 40°C 7-67. You are mixing a developing solution and the directions call for water at 23.8°C. This is equal to how many degrees Fahrenheit? 1. 18.75°F 2. 37.50°F 3. 75.00°F 4. 125.50°F 7-68. You are preparing a working solution of developer from a stock solution. The instructions call for 1 part of stock solution and 3 parts water. You need a total of 1 gallon of working solution. What amount of water, in ounces, should you add to the solution? 1. 32 2. 64 3. 96 4. 128 7-69. For adequate ventilation in a chemical mixing area, there should be one complete air change every 1. 15 minutes 2. 30 minutes 3. 3 minutes 4. 45 minutes 7-70. It is permissible to mix photo- graphic chemicals in a photographic print room that has adequate ventilation. 1. True 2. False 7-71. You need 32 ounces of developer solution. The only size package of dry, prepackaged chemicals you have on hand makes 128 ounces. Should you mix the entire package to make 128 ounces and, if so, why? 1. Yes; when only part of the package is mixed, some of the ingredients may be left out of the resulting solution 2. Yes; when only part of the package is mixed, the resulting solution will not develop film 3. No; dry, packaged chemicals are homogenized 4. No; dry, packaged chemicals are formulated to be mixed either in part or in whole 7-72. You should follow what procedure when mixing chemicals? 1. Add water to dry chemicals and acid to water 2. Add dry chemicals to water and acid to water 3. Add water to dry chemicals and water to acid 4. Add dry chemicals to water and water to acid Learning Objective: Recognize safety precautions required in chemical mixing areas. 7-73. Labels on chemical storage tanks must include the name of the solution, hazardous chemicals contained, the name of the person who mixed it, and what other information? 1. The water-mixing temperature 2. The date mixed 3. The antidote 4. The name of the chemical-mixing supervisor 55 contents Basic Photography Course <- previous page next page ->	As an Amazon Associate I earn from qualifying purchases.
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