Kansas Water Treatment 1
Kansas Water Treatment Operator 1 Certification practice test. Based on KDHE study guide
- 1.When Collecting a distribution system sample for bacteriological testing, the person collecting the sample should allow the water to run ____ before filling the sample bottle.
- A.
As long as necessary to permit clearing of the service line
- B.
1 hr
- C.
30 min
- D.
Only a few seconds
- 2.The Volume of a Cylinder with a radius of 5ft and a height of 8 ft is ___ cubic FT
- A.
157
- B.
328
- C.
451
- D.
628
- 3.The volume of a 100FT diameter tank that is 12ft deep is ____ Cubic FT
- A.
94,200
- B.
98,600
- C.
103,300
- D.
285,200
- 4.A chemical commonly used to raise PH is
- A.
Alum
- B.
Calgon
- C.
Chlorine
- D.
Lime
- 5.Black stains on plumbing fixtures might be attributed to
- A.
Calcium
- B.
Copper
- C.
Magnesium
- D.
Manganese
- 6.One Kilogram equals ____ grams
- A.
10
- B.
100
- C.
1000
- D.
10,000
- 7.The indicator organisms used to determine contamination of drinking water are
- A.
Coliform group
- B.
Giardia lamblia
- C.
Iron bacteria
- D.
Salmonella
- 8.The packing around the shaft of a centrifugal pump should be
- A.
In good condition
- B.
Kept as tight as possible
- C.
Replaced once a month
- D.
Tightened just enough to allow an occasional drop of liquid to escape
- 9.The chemical symbol for iron is
- A.
Al
- B.
Ca
- C.
Fe
- D.
Ir
- 10.One pound per square inch of pressure will raise water ____ Feet
- A.
2.31
- B.
10.5
- C.
62.5
- D.
1728
- 11.Static head is defined as the
- A.
Energy of motion of the water
- B.
Pressure due to depth or elevation of the water
- C.
Pressure loss in the line due to friction
- D.
All the above
- 12.What is the volume of a settling tank 100ft long, 25ft wide, and 8ft deep?
- A.
16,000 cubic feet
- B.
20,000 cubic feet
- C.
25,000 cubic feet
- D.
36,200 cubic feet
- 13.What is used to detect chlorine leaks ?
- A.
10 percent solution of aluminum sulfate
- B.
10 percent solution of ammonia hydroxide
- C.
10 percent solution of calcium hydroxide
- D.
10 percent solution of sodium hydroxide
- 14.The pressure gauge reading at the base of a tank filled to a depth of 1 ft is ___ PSI
- A.
144
- B.
62.4
- C.
0.433
- D.
0.231
- 15.The multiple tube fermentation test consists of three distinct tests. These tests, in the order performed, are the
- A.
Preliminary, confirmed, and completed tests
- B.
Preliminary, presumptive and confirmed tests
- C.
Presumptive, confirmed and completed tests
- D.
Presumptive, preliminary, and completed tests
- 16.Chlorine gas is
- A.
The same weight by volume as air.
- B.
Lighter than air.
- C.
Lighter than air only when under pressure.
- D.
Denser than air.
- 17.Polyphosphates may be used in water treatment to retard corrosion and
- A.
Adjust pH
- B.
Calcium scale
- C.
Reduce chlorine demand
- D.
Reduce taste and odor.
- 18.Calcium hypochlorite is formulated as a
- A.
Coagulant
- B.
Gas
- C.
Liquid
- D.
Powder
- 19.Chlorine leaks in metal container tend to
- A.
Become larger
- B.
Become smaller
- C.
Remain the same size
- D.
Seal themselves
- 20.Determining the pH of water is one of the important test of water quality. The results of the pH test indicate the
- A.
Chlorine residual
- B.
Hydrogen ion activity
- C.
Presence of coliform organisms
- D.
Presence of iron
- 21.Leakage from a packing gland should be approximately
- A.
None
- B.
One drop per second
- C.
One drop per minute
- D.
30 drops per hour
- 22.A chlorine cylinder valve is thought to be leaking. If ammonia vapor is passed near the valve, the presence of a leak would be indicated by
- A.
A loud noise
- B.
A red vapor
- C.
A rotten egg odor
- D.
White smoke
- 23.If a fire hydrant requires a nozzle pressure of 100 PSI, what head of water must be used to supply it?
- A.
231 ft
- B.
63.3 ft
- C.
32.1 ft
- D.
21 ft
- 24.A water main should be disinfected
- A.
When the pipe is in the storage yard
- B.
After the pipe is delivered to the job site
- C.
After the pipe is laid in place
- D.
At the manufacturer's plant.
- 25.Carbon dioxide in water will
- A.
Decrease turbidity
- B.
Increase turbidity
- C.
Lower pH
- D.
Increase pH
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