Question 1

The phrase "acid rain" applies to rain water with a pH of

Accepted Answer

A)  7 
B)  6-7 
C)  < 5.6 
D)  5.6 
A)  7 
B)  6-7 
C)  < 5.6 
D)  5.6

Question 2

Which of the following would affect biochemical oxygen demand (BOD)?

Accepted Answer

A)  silt 
B)  dissolved radionuclides 
C)  dissolved organic compounds 
D)  heavy metal ions 
A)  silt 
B)  dissolved radionuclides 
C)  dissolved organic compounds 
D)  heavy metal ions

Question 3

The disinfectant widely used in Europe to kill harmful bacteria in water treatment plants is

Accepted Answer

A)  bromine 
B)  oxygen 
C)  ozone 
D)  sodium hypochlorite 
A)  bromine 
B)  oxygen 
C)  ozone 
D)  sodium hypochlorite

Question 4

What percentage of the human body is water?

Accepted Answer

A)  10% 
B)  40-50% 
C)  70% 
D)  98% 
A)  10% 
B)  40-50% 
C)  70% 
D)  98%

Question 5

Which of the following dissolved substances would you not expect to be in "pure" water?

Accepted Answer

A)  CN- 
B)  Fe2+ 
C)  O2 
D)  dust particles 
A)  CN- 
B)  Fe2+ 
C)  O2 
D)  dust particles

Question 6

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 7

Freshwater can be made from seawater through

Accepted Answer

A)  distillation 
B)  reverse osmosis 
C)  filtration 
D)  both a and b above 
A)  distillation 
B)  reverse osmosis 
C)  filtration 
D)  both a and b above

Question 8

Which of the following would be considered polluted water?

Accepted Answer

A)  water containing dissolved metal salts 
B)  water which has been heated above normal 
C)  water containing organic solvents 
D)  all of these 
A)  water containing dissolved metal salts 
B)  water which has been heated above normal 
C)  water containing organic solvents 
D)  all of these

Question 9

Of the household wastes listed below (all of which would be considered industrial hazardous wastes), which one could be disposed of down the sink?

Accepted Answer

A)  oil-based paints 
B)  furniture polish 
C)  latex paint 
D)  automotive antifreeze 
A)  oil-based paints 
B)  furniture polish 
C)  latex paint 
D)  automotive antifreeze

Question 10

Hard water is caused by

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 11

If a sample of tap water has the smell of rotten eggs, which substance is likely present?

Accepted Answer

A)  chlorine 
B)  hydrogen sulfide 
C)  algae 
D)  copper 
A)  chlorine 
B)  hydrogen sulfide 
C)  algae 
D)  copper

Question 12

Which of the following is the major user of water in the United States?

Accepted Answer

A)  households 
B)  industry 
C)  agriculture 
D)  steam-electric utilities 
A)  households 
B)  industry 
C)  agriculture 
D)  steam-electric utilities

Question 13

Why are disinfection by-products a health concern?

Accepted Answer

A)  they are toxic 
B)  they are electrically charged 
C)  they are suspected carcinogens 
D)  they cut the oxygen level in the water 
A)  they are toxic 
B)  they are electrically charged 
C)  they are suspected carcinogens 
D)  they cut the oxygen level in the water

Question 14

Which type of disposal of hazardous waste listed below is probably best, when all of the alternatives are considered?

Accepted Answer

A)  underground injection 
B)  incineration 
C)  secure landfills 
D)  recycling and recovery 
A)  underground injection 
B)  incineration 
C)  secure landfills 
D)  recycling and recovery

Question 15

Acid rain (acid deposition) contributes to which of the following problems?

Accepted Answer

A)  dead lakes where fish cannot survive 
B)  damage to forests 
C)  leaching of metal ions into groundwater 
D)  all of these 
A)  dead lakes where fish cannot survive 
B)  damage to forests 
C)  leaching of metal ions into groundwater 
D)  all of these

Question 16

Layers of water-bearing porous rock are called

Accepted Answer

A)  aquifers 
B)  artesian wells 
C)  ground wells 
D)  brackish wells 
A)  aquifers 
B)  artesian wells 
C)  ground wells 
D)  brackish wells

Question 17

Biochemical oxygen demand (BOD) is

Accepted Answer

A)  high for polluted water 
B)  low for polluted water 
C)  not affected by water pollution 
D)  a measure of the amount of oxygen in the body 
A)  high for polluted water 
B)  low for polluted water 
C)  not affected by water pollution 
D)  a measure of the amount of oxygen in the body

Question 18

What is the name of the sticky gelatinous precipitate that is formed in the primary treatment process and carries away suspended dirt particles and bacteria?

Accepted Answer

A)  calcium sulfate 
B)  calcium hydroxide 
C)  aluminum hydroxide 
D)  aluminum sulfate 
A)  calcium sulfate 
B)  calcium hydroxide 
C)  aluminum hydroxide 
D)  aluminum sulfate

Question 19

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

The phrase "acid rain" applies to rain water with a pH of

Which of the following would affect biochemical oxygen demand (BOD)?

The disinfectant widely used in Europe to kill harmful bacteria in water treatment plants is

What percentage of the human body is water?

Which of the following dissolved substances would you not expect to be in "pure" water?

Nitrate ions in waste water can be removed by

Freshwater can be made from seawater through

Which of the following would be considered polluted water?

Of the household wastes listed below (all of which would be considered industrial hazardous wastes), which one could be disposed of down the sink?

Hard water is caused by

If a sample of tap water has the smell of rotten eggs, which substance is likely present?

Which of the following is the major user of water in the United States?

Why are disinfection by-products a health concern?

Which type of disposal of hazardous waste listed below is probably best, when all of the alternatives are considered?

Acid rain (acid deposition) contributes to which of the following problems?

Layers of water-bearing porous rock are called

Biochemical oxygen demand (BOD) is

What is the name of the sticky gelatinous precipitate that is formed in the primary treatment process and carries away suspended dirt particles and bacteria?

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

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

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

The phrase "acid rain" applies to rain water with a pH of

Which of the following would affect biochemical oxygen demand (BOD)?

The disinfectant widely used in Europe to kill harmful bacteria in water treatment plants is

What percentage of the human body is water?

Which of the following dissolved substances would you not expect to be in "pure" water?

Nitrate ions in waste water can be removed by

Freshwater can be made from seawater through

Which of the following would be considered polluted water?

Of the household wastes listed below (all of which would be considered industrial hazardous wastes), which one could be disposed of down the sink?

Hard water is caused by

If a sample of tap water has the smell of rotten eggs, which substance is likely present?

Which of the following is the major user of water in the United States?

Why are disinfection by-products a health concern?

Which type of disposal of hazardous waste listed below is probably best, when all of the alternatives are considered?

Acid rain (acid deposition) contributes to which of the following problems?

Layers of water-bearing porous rock are called

Biochemical oxygen demand (BOD) is

What is the name of the sticky gelatinous precipitate that is formed in the primary treatment process and carries away suspended dirt particles and bacteria?

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

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

Filters