Nait 4Th Period Impurities In Water

Front 1

The physical characteristics of water can be crudely evaluated using

Back 1

Our five senses

Front 2

What is the term for living organisms that live in water

Back 2

Biological characteristics

Front 3

Every substance that dissolved in water can be called

Back 3

A chemical water characteristic

Front 4

What is the booklet produced by Health Canada

Back 4

Guidelines for Canadian Drinking Water and Quality

Front 5

Inorganic pollutants are the

Back 5

Minerals and salts dissolved in water and the silt suspended in water

Front 6

The acceptable range of pH is

Back 6

6.5 to 8.5

Front 7

The recommended limit of bicarbonate is

Back 7

1000mg/l

Front 8

The recommended limit of chloride is

Back 8

250mg/l

Front 9

The recommended limit of nitrate and nitrite is

Back 9

10mg/l

Front 10

The recommended limit of sulphate is

Back 10

500mg/l

Front 11

What is extremely undesirable in water

Back 11

Iron

Front 12

What are the two forms of iron

Back 12

Ferrous and ferric

Front 13

What form of iron is recognized by a stringy, slimy growth inside a toilet tank

Back 13

Bacterial iron

Front 14

Water softeners can remove iron up to

Back 14

3ppm

Front 15

High levels of iron can be removed by

Back 15

Manganese green sand filter

Front 16

Manganese green sand filter will remove iron up to

Back 16

10ppm

Front 17

Manganese green sand filter is regenerated using

Back 17

Potassium permanganate

Front 18

Chem free iron filters introduce a small amount of

Back 18

Air into the system using a hydro charger

Front 19

Chlorination followed by filtration through sand can remove

Back 19

Any quantity of iron in any form

Front 20

What can be used to correct acidic water

Back 20

Neutralizer or soda ash

Front 21

What filter will remove tastes and odours

Back 21

Activated charcoal

Front 22

What is the acceptable level of TDS in water

Back 22

Up to 500ppm

Front 23

Turbidity in water can be removed by the addition of

Back 23

Alum

Front 24

Alum coagulates fine material into larger particles called

Back 24

Floc

Front 25

Testing of water should be performed

Back 25

Annually

Front 26

Hardness, iron and other minerals are more prevalent in

Back 26

Deep wells

Front 27

Wells that are cleaner but are more likely to contain chemicals, minerals and pollution are usually

Back 27

Shallow wells

Front 28

How many ppm is soft water

Back 28

0-50

Front 29

How many ppm is moderately hard water

Back 29

100-150

Front 30

How many ppm is hard water

Back 30

150-200

Front 31

People with high blood pressure should not drink water with more than

Back 31

20 mg/l

Front 32

Sulphur and H2S can be removed by using

Back 32

Manganese green sand filter

Chem free

Chlorination

Front 33

Biological impurities can removed by using a

Back 33

Chlorination

UV light or boiling for a minimum of 10min

Front 34

What two minerals cause permanent hardness

Back 34

Calcium carbonate

Magnesium carbonate

Front 35

What are the four factors that affect quantity of dissolved minerals in water

Back 35

Temperature

Time

Minerals

pH