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Chapter 12 Section 1 & 2 Review
Test Description: Review for Chapter 12 Test
Instructions: Answer all questions to get your test result.
1) The pH of water is a measure of its
A
saltiness.
B
color.
C
acidity.
D
cloudiness.
2) Pure water is neutral, meaning it is neither an acid nor a base. Pure water has a pH of
A
0
B
7
C
10
D
14
3) Hard water contains high levels of
A
soapsuds.
B
calcium and magnesium.
C
Escherichia coli.
D
sewage.
4) The first step in treating water from a river or lake is usually
A
filtration.
B
coagulation.
C
concentration.
D
chlorination.
5) Why is chlorine added to drinking water?
A
Chlorine improves the taste of water.
B
Chlorine prevents water from becoming cloudy.
C
Chlorine kills disease-causing microorganisms.
D
Chlorine softens hard water.
6) A drought is a long period of
A
unusually hot weather.
B
less rainfall than normal.
C
rain coming late in the year.
D
heavy, damaging rains.
7) The process of obtaining fresh water from salt water is called
A
desalination.
B
coagulation.
C
filtration.
D
conservation.
8) Using water wisely to avoid wasting it is called
A
irrigation.
B
distribution.
C
conservation.
D
desalination.
9) The amount of one substance in a certain volume of water is called its
A
harndess
B
pollution
C
chlorine.
D
concentration.
10) Smoke and exhaust from cars and factories create the form of water pollution called
A
pesticides
B
fertelizers
C
hardness
D
acid rain
*select an answer for all questions
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