ILLINOIS CLASS C WATER CERTIFICATION ACTUAL QUESTIONS
WITH DETAILED ANSWERS
Question 1.
When using a sodium Fluoride Saturator Why should you use Soft water?
Correct Answer: To prevent the precipitation of calcium and magnesium fluoride
Question 2.
What is a laglier Index?
Correct Answer: The Langelier Index is an approximate indicator of the degree
of saturation of calcium carbonate in water. It is calculated (58 KB) using the
pH, alkalinity, calcium concentration, total dissolved solids, and water
temperature of a water sample collected at the tap.
Question 3.
What does a Latern ring do, and where is it located?
Correct Answer: A perforated hollow ring keeps the shaft cool and lubricated in
the center of a packing box
Question 4.
What does a well's wear ring do?
Correct Answer: Close running renewable clearance which reduces leaking. it is
in the pump case on the impeller
Question 5.
How do you install packing?
Correct Answer: Cut with a beveled edge, place in gland, tighten gland snugly,
alowing a small amount of waret to leak.
Question 6.
How do you mix water and acid?
Correct Answer: Always add acid to water (strong to weak)
Question 7.
How do you figure how long it will take water level to rise 2 foot?
Correct Answer: 1. volume of tank 2.Gallons per foot 3.What is the flow?
Question 8.
What type of Fluoride do you not mix with Chlorine?
Correct Answer: HFS Acid
, Question 9.
How often do backflow devices (RPZ) need to be tested?
Correct Answer: once a year
Question 10.
How long do you wait to read the results after a free chlorine reagent is mixed with water?
Correct Answer: within one minute
Question 11.
How long do you wait to read the results after a total chlorine reagent is mixed with water?
Correct Answer: after three but before six
Question 12.
Classify PH levels
Correct Answer: 7 is neutral above 7 is alkaline below 7 is acidic
Question 13.
when should and altitude valve on a storage tank open?
Correct Answer: when water is being called for due to lower levels in higher
elevation tanks
Question 14.
What reacts with Chlorine to create "combined Chlorine?"
Correct Answer: Nitrogen tricloride(NCl3), dichloramine (NHCl2), and
monochloromine(NH2Cl)
Question 15.
One-ton Chlorine gas cylinder what valve does chlorine gas come from?
Correct Answer: The top valve
Question 16.
What does a chlorine cylinder need to convert liquid chlorine into gas?
Correct Answer: An Evaporator
Question 17.
What is the per-capita use of water in the US?
Correct Answer: 98-100 gallons
WITH DETAILED ANSWERS
Question 1.
When using a sodium Fluoride Saturator Why should you use Soft water?
Correct Answer: To prevent the precipitation of calcium and magnesium fluoride
Question 2.
What is a laglier Index?
Correct Answer: The Langelier Index is an approximate indicator of the degree
of saturation of calcium carbonate in water. It is calculated (58 KB) using the
pH, alkalinity, calcium concentration, total dissolved solids, and water
temperature of a water sample collected at the tap.
Question 3.
What does a Latern ring do, and where is it located?
Correct Answer: A perforated hollow ring keeps the shaft cool and lubricated in
the center of a packing box
Question 4.
What does a well's wear ring do?
Correct Answer: Close running renewable clearance which reduces leaking. it is
in the pump case on the impeller
Question 5.
How do you install packing?
Correct Answer: Cut with a beveled edge, place in gland, tighten gland snugly,
alowing a small amount of waret to leak.
Question 6.
How do you mix water and acid?
Correct Answer: Always add acid to water (strong to weak)
Question 7.
How do you figure how long it will take water level to rise 2 foot?
Correct Answer: 1. volume of tank 2.Gallons per foot 3.What is the flow?
Question 8.
What type of Fluoride do you not mix with Chlorine?
Correct Answer: HFS Acid
, Question 9.
How often do backflow devices (RPZ) need to be tested?
Correct Answer: once a year
Question 10.
How long do you wait to read the results after a free chlorine reagent is mixed with water?
Correct Answer: within one minute
Question 11.
How long do you wait to read the results after a total chlorine reagent is mixed with water?
Correct Answer: after three but before six
Question 12.
Classify PH levels
Correct Answer: 7 is neutral above 7 is alkaline below 7 is acidic
Question 13.
when should and altitude valve on a storage tank open?
Correct Answer: when water is being called for due to lower levels in higher
elevation tanks
Question 14.
What reacts with Chlorine to create "combined Chlorine?"
Correct Answer: Nitrogen tricloride(NCl3), dichloramine (NHCl2), and
monochloromine(NH2Cl)
Question 15.
One-ton Chlorine gas cylinder what valve does chlorine gas come from?
Correct Answer: The top valve
Question 16.
What does a chlorine cylinder need to convert liquid chlorine into gas?
Correct Answer: An Evaporator
Question 17.
What is the per-capita use of water in the US?
Correct Answer: 98-100 gallons
