Print Options

Card layout: ?

← Back to notecard set|Easy Notecards home page

Instructions for Side by Side Printing
  1. Print the notecards
  2. Fold each page in half along the solid vertical line
  3. Cut out the notecards by cutting along each horizontal dotted line
  4. Optional: Glue, tape or staple the ends of each notecard together
  1. Verify Front of pages is selected for Viewing and print the front of the notecards
  2. Select Back of pages for Viewing and print the back of the notecards
    NOTE: Since the back of the pages are printed in reverse order (last page is printed first), keep the pages in the same order as they were after Step 1. Also, be sure to feed the pages in the same direction as you did in Step 1.
  3. Cut out the notecards by cutting along each horizontal and vertical dotted line
To print: Ctrl+PPrint as a list

23 notecards = 6 pages (4 cards per page)

Viewing:

B Exam: Iron, Manganese and Fluoride

front 1

What is the Primary MCL for Fluoride?

back 1

4

front 2

What is the Secondary MCL?

back 2

2

front 3

What is the purpose of adding fluoride to water?

back 3

To prevent caries, Cavities

front 4

Adding to much fluoride to water will cause?

back 4

Mottling your teeth (Staining them brown)

front 5

What do you give someone who has swallowed fluoride?

back 5

Water or Milk

front 6

What is the first symptom of swallowing fluoride?

back 6

Vomiting

front 7

What is the first symptom of inhaling fluoride?

back 7

Nose Bleed

front 8

If you use sodium fluoride in fluoridation, what must be done to the water if the hardness is above 75?"

back 8

Soften the water

front 9

When feeding sodium fluoride with a saturator, above what water hardness will scaling occur?

back 9

10

front 10

How many ppm of fluoride must be added to the finished water if the raw water fluoride content is 0.15 ppm and the desired fluoride limit is.8 ppm?

back 10

0.65 ppm

front 11

In Question 10, how many pounds of 100% F will be added per day if the WTP treats 10 MGD?

back 11

54 LBS (0.65 x 10 x 8.34)

front 12

What is a day tank?

back 12

A tank that holds enough chemical to feed water produced in a day.

front 13

What type of pump is used to feed chemicals?

back 13

Positive Displacement (Piston)

front 14

Recommended Control Limits are fluoride concentrations are based on?

back 14

Recommended Control Limits are fluoride concentrations are based on?

front 15

What is the most common fluoride compound used in water treatment?

back 15

Hydrofluosilicic Acid

front 16

The three most common fluoride compounds used in water treatment are?

back 16

Hydrofluosilicic Acid (H₂SiF₆); Sodium Fluoride (Na); Sodium Silcofluoride (Na₂SiF₆)

front 17

When choosing fluoride-pumping equipment, the most important criteria is?

back 17

Accuracy

front 18

Fluoride doses must never be metered against a?

back 18

Negative or Suction Head

front 19

Fluoride systems must be designed with the means to prevent?

back 19

Backsiphonage and Overfeeding

front 20

Fluoride systems should be designed by?

back 20

An engineer

front 21

If an operator gets fluoride on his skin or in his eyes, the recommended first aid is?

back 21

Flush with large amount of water for 15 minutes Eyes - Flush and see a doctor)

front 22

Never operate a positive displacement pump against?

back 22

front 23

A form of backflow caused by a negative or below atmospheric pressure within a water system is called?

back 23

Backsiphonage