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Multiple Choice Quiz
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1

Which of the following is a point source of water pollution?
A)waste from fish and other aquatic life in streams and lakes
B)waste coming from a drain pipe into a stream
C)water run off from farm fields into streams
D)all of the above
2

Pollutants are often expressed in parts per million, ppm. This is equivalent to
A)1 gram per liter.
B)1 milligram per liter.
C)1 microgram per liter.
D)1 picogram per liter.
3

A 10.0L water sample contains 0.06g of calcium ions. What is the concentration of calcium ions in ppm?
A)600ppm
B)6,000,000ppm
C)6.0ppm
D)6,000ppm
4

Most pesticides are __.
A)inorganic compounds
B)organic compounds
C)carcinogenic compounds
D)biomagnified compounds
5

The populations that were hardest hit by the increased concentration of DDT in waterways were
A)fish.
B)birds.
C)amphibians.
D)all of the above.
6

__ degrade rapidly.
A)Chlorinated hydrocarbons
B)Organophosphates
C)Carbamates
D)b and c
E)Heptachlor
7

Farmers use __ herbicides to kill weeds in their fields.
A)biomagnifier
B)synergistic
C)selective
D)nonselective
8

Natural and synthetic fertilizers release __ for plants to use.
A)nitrites
B)sulfites
C)nitrates
D)sulfates
9

The federal safety limit for nitrate concentration in ground water is __ ppm.
A)0.01
B)1.0
C)10
D)100
10

The largest source of phosphate pollution used to be from __ before strict controls on phosphates were put in place
A)pesticides
B)herbicides
C)fertilizers
D)laundry detergents
11

High levels of nitrate ion in water can cause serious health problems to __.
A)infants
B)children
C)adults
D)all of the above
12

Excess phosphate ion can have a serious effect on fish because it serves as a nutrient for the growth of __.
A)algae
B)fungi
C)bacteria
D)all of the above
13

Water does not mix with oil because
A)water is polar and oil is polar.
B)water is polar and oil is nonpolar.
C)water is nonpolar and oil is polar.
D)water is nonpolar and oil is nonpolar.
14

The preferred method for cleaning oil spills is
A)dispersal.
B)bacterial degredation.
C)combustion.
D)containment.
15

Oil slicks can serve as "food" for
A)algae.
B)bacteria.
C)plankton.
D)fish.
16

Primary treatment of water involves removal of __ solids.
A)dissolved
B)all
C)suspended
D)organic
17

Secondary treatment of water involves the introduction of __ to the water being treated.
A)microgranisms
B)chlorine
C)algae
D)several purfiying chemicals
18

Tertiary treatment of water involves the filtering of the water through a bed of granular__ which absorbs the dissolved organic substances.
A)carbon
B)silicon dioxide
C)calcium carbonate
D)metal
19

During tertiary treatment of water, residual microorganisms are killed by adding __.
A)methane
B)a selective pesticide
C)Ca(OH)2
D)chlorine
20

What is the concentration of atrazine in ppb in a solution of 0.0375mg of atrazine in 21.0 kg of water?
A)1.79ppb
B)1790ppb
C)1.79 x 106ppb
D)24.1ppb





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