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Multiple Choice Quiz
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1

Smog is a reactive mixture of airborne chemicals resulting from the interactions of __ and nitrogen oxides.
A)nonvolatile inorganic compounds
B)nonvolatile organic compounds
C)volatile inorganic compounds
D)volatile organic compounds
2

Evidence of the arrival of oxygen in the atmosphere can be found in
A)the nature of the minerals in the rocks formed at that time.
B)the early fossils of primitive life forms at that time.
C)the changes of the atmosphere due to water vapor at that time
D)all of the above
3

Oxygen began to build up in the atmosphere as a result of
A)the breakdown of water into hydrogen and oxygen gas.
B)the reaction of water vapor in the atmosphere with nitrogen gas.
C)the chemical activities of living things releasing oxygen as a waste gas.
D)the reaction of methane, hydrogen and water vapor in the atmosphere.
4

About 0.4 billion years ago the oxygen level in the atmosphere became high enough for it to form __ by the action of ultraviolet light.
A)nitrogen oxides
B)ozone
C)carbon oxides
D)metal oxides
5

The __ content of the atmosphere changes from day to day due to weather conditions.
A)oxygen
B)water
C)carbon dioxide
D)nitrogen
6

Ozone can only be formed when there is a considerable amount of __ present.
A)diatomic nitrogen
B)carbon monoxide
C)diatomic hydrogen
D)diatomic oxygen
7

About __ percent of the air's volume is nitrogen.
A)20
B)40
C)60
D)80
8

__ are different molecular forms of the same chemical substances.
A)Allotropes
B)Isotopes
C)Isomers
D)Polytropes
9

Which of the following is true for the nitrogen-nitrogen bond?
A)It contains one sigma and one pi bond.
B)It does not require much energy to break it.
C)It gives off energy when it is broken.
D)It is very stable.
10

NO2 in the atmosphere is the main chemical that absorbs sunlight during the process which leads to __.
A)ozone formation
B)decreased infrared radiation
C)photochemical smog
D)photosynthesis in the atmosphere
11

The major use of nitrogen is in the production of__.
A)NO
B)NO2
C)NH3
D)HNO3
12

The major event in the greenhouse effect is that some of the IR radiation heading back towards space is absorbed by the "greenhouse gases" of the atmosphere. The major "greenhouse gas" is __.
A)NO2
B)CO2
C)SO2
D)SO3
13

Automobile exhaust is made up mostly of __.
A)carbon monoxide and sulfur dioxide
B)nitrogen and oxygen
C)nitrogen dioxide and lead
D)carbon dioxide and water
14

A radical is a chemical species that carries __.
A)a charge
B)an extra proton
C)unpaired electrons
D)more neutrons than normal isotopes of that element
15

A catalytic converter is a device fitted to automobiles to cut down on __ emissions.
A)CO2 and SO2
B)N2 and O2
C)NO2 and CO2
D)NO and CO
16

Smog does so much damage to people, plants and materials because it is so __.
A)reactive
B)radioactive
C)dense
D)all of the above
17

Ozone is a strong __.
A)lachrymator
B)radical
C)oxidizing agent
D)reducing agent
18

Smog levels could be reduced by
A)increased use of public transportation.
B)developing smaller and more efficient automobile engines.
C)improved catalytic converters.
D)all of the above.
19

Particulate matter in the atmosphere includes __ particles.
A)small solid
B)liquid
C)gas
D)all of the above
E)a and b only
20

__ ozone is helpful to us, whereas __ ozone is harmful to us as a pollutant.
A)Tropospheric, mesospheric
B)Stratospheric, thermospheric
C)Surface, tropospheric
D)Stratospheric, surface





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