Question 1

What substances are used to disinfect water?

Accepted Answer

A)  hydrogen peroxide and ammonia 
B)  ozone and chlorine 
C)  organic peroxides 
D)  inorganic acids 
A)  hydrogen peroxide and ammonia 
B)  ozone and chlorine 
C)  organic peroxides 
D)  inorganic acids

Question 2

Potable is another term for polluted water.

Accepted Answer

A) True 
 B)False

Question 3

Nitrate ions in waste water can be removed by

Accepted Answer

A)  primary treatment 
B)  secondary treatment 
C)  tertiary treatment 
D)  both a and b above 
A)  primary treatment 
B)  secondary treatment 
C)  tertiary treatment 
D)  both a and b above

Question 4

Oxygen

Accepted Answer

A)  is more soluble in warm water than in cold water. 
B)  is not required to metabolize organic material in water. 
C)  does not react with water pollutants. 
D)  is more soluble in cold water than in warm water. 
A)  is more soluble in warm water than in cold water. 
B)  is not required to metabolize organic material in water. 
C)  does not react with water pollutants. 
D)  is more soluble in cold water than in warm water.

Question 5

Which process is not used by nature to purify natural water?

Accepted Answer

A)  distillation 
B)  chlorination 
C)  sedimentation 
D)  aeration 
A)  distillation 
B)  chlorination 
C)  sedimentation 
D)  aeration

Question 6

Consider the following image showing water resources.   Complete the following questions using the appropriate letter from the image. More than one letter may be correct and some letters may not be used. You need only enter one letter for each question.
-The region that provides a source of water to both surface and ground water resources is indicated by letter _____.

Accepted Answer

The answer of Consider the following image showing water resources....

Question 7

Two acids found in acid rain are

Accepted Answer

A)  nitric acid and phosphoric acid. 
B)  sulfuric acid and nitric acid. 
C)  phosphoric acid and sulfuric acid. 
D)  carbonic acid and acetic acid. 
A)  nitric acid and phosphoric acid. 
B)  sulfuric acid and nitric acid. 
C)  phosphoric acid and sulfuric acid. 
D)  carbonic acid and acetic acid.

Question 8

Hard water can be caused by the presence of

Accepted Answer

A)  Na+ and K+. 
B)  Ca2+, Mg2+, Fe3+. 
C)  Na+ and Al3+. 
D)  K+ and Pb2+. 
A)  Na+ and K+. 
B)  Ca2+, Mg2+, Fe3+. 
C)  Na+ and Al3+. 
D)  K+ and Pb2+.

Question 9

Precipitation with a pH of 8.0 would classify as acid rain.

Accepted Answer

A) True 
 B)False

Question 10

Primary wastewater treatment copies two of nature's purification methods. Which two are these?

Accepted Answer

A)  distillation and crystallization 
B)  settling and filtration 
C)  aeration and chlorination 
D)  oxidation and dilution 
A)  distillation and crystallization 
B)  settling and filtration 
C)  aeration and chlorination 
D)  oxidation and dilution

What substances are used to disinfect water?

Potable is another term for polluted water.

Nitrate ions in waste water can be removed by

Oxygen

Which process is not used by nature to purify natural water?

Two acids found in acid rain are

Hard water can be caused by the presence of

Precipitation with a pH of 8.0 would classify as acid rain.

Primary wastewater treatment copies two of nature's purification methods. Which two are these?

Living in a World of Chemistry

The Chemical View of Matter

Atoms and the Periodic Table

The Air We Breathe

Chemical Bonding and States of Matter

Carbon Dioxide and the Greenhouse Effect

Chlorofluorocarbons and the Ozone Layer

Chemical Reactivity: Chemicals in Action

Acid-Base Reactions

Oxidation-Reduction Reactions

Energy and Hydrocarbons

Nuclear Changes and Nuclear Power

Organic Chemicals and Polymers

The Chemistry of Life

Nutrition: the Basis of Healthy Living

Chemistry and Medicine

The Chemistry of Useful Materials

Feeding the World

Filters

Exam 11: Water, Water Everywhere but Not a Drop to Drink

What substances are used to disinfect water?

Potable is another term for polluted water.

Nitrate ions in waste water can be removed by

Oxygen

Which process is not used by nature to purify natural water?

Two acids found in acid rain are

Hard water can be caused by the presence of

Precipitation with a pH of 8.0 would classify as acid rain.

Primary wastewater treatment copies two of nature's purification methods. Which two are these?

Living in a World of Chemistry

The Chemical View of Matter

Atoms and the Periodic Table

The Air We Breathe

Chemical Bonding and States of Matter

Carbon Dioxide and the Greenhouse Effect

Chlorofluorocarbons and the Ozone Layer

Chemical Reactivity: Chemicals in Action

Acid-Base Reactions

Oxidation-Reduction Reactions

Energy and Hydrocarbons

Nuclear Changes and Nuclear Power

Organic Chemicals and Polymers

The Chemistry of Life

Nutrition: the Basis of Healthy Living

Chemistry and Medicine

The Chemistry of Useful Materials

Feeding the World

Filters