Question 1

In what year will all production and importation of HCFCs end in the United States?

Accepted Answer

A) 2012 
B) 2020 
C) 2030 
D) 2015 
A) 2012 
B) 2020 
C) 2030 
D) 2015 D

Question 2

Which of the following compounds is useful for putting out fires and does not deplete stratospheric ozone concentrations?

Accepted Answer

A) Halon-1211 
B) CFC-113 
C) HFCs 
D) Methyl Bromide 
A) Halon-1211 
B) CFC-113 
C) HFCs 
D) Methyl Bromide A

Question 3

What is the relationship between stratospheric levels of atomic chlorine and ozone?

Accepted Answer

A) As chlorine increases,ozone increases. 
B) As chlorine increases,ozone decreases. 
C) As chlorine changes,the effect on the ozone level is unpredictable. 
D) As chlorine changes,there is no effect of the ozone level. 
A) As chlorine increases,ozone increases. 
B) As chlorine increases,ozone decreases. 
C) As chlorine changes,the effect on the ozone level is unpredictable. 
D) As chlorine changes,there is no effect of the ozone level. B

Question 4

What distinguishes the atoms of one element from another?

Accepted Answer

A) the number of neutrons 
B) the number of protons plus neutrons 
C) the number of protons 
D) the number of neutrons plus electrons 
A) the number of neutrons 
B) the number of protons plus neutrons 
C) the number of protons 
D) the number of neutrons plus electrons

Question 5

The Montreal protocol is a

Accepted Answer

A) treaty to protect against global warming. 
B) treaty to reduce the amount of CFCs produced in the world. 
C) list of substitutes for CFCs. 
D) way to destroy CFCs in the stratosphere. 
A) treaty to protect against global warming. 
B) treaty to reduce the amount of CFCs produced in the world. 
C) list of substitutes for CFCs. 
D) way to destroy CFCs in the stratosphere.

Question 6

As the ozone hole gets more pronounced,with time,one expects the incidence of skin cancer to

Accepted Answer

A) decrease worldwide. 
B) increase worldwide. 
C) increase in the northern hemisphere and decrease in the southern hemisphere. 
D) decrease in the northern hemisphere and decrease in the northern hemisphere. 
A) decrease worldwide. 
B) increase worldwide. 
C) increase in the northern hemisphere and decrease in the southern hemisphere. 
D) decrease in the northern hemisphere and decrease in the northern hemisphere.

Question 7

Which product of the ultraviolet decomposition of CFCs acts as the catalyst for ozone decomposition?

Accepted Answer

A) oxygen atoms 
B) chlorine atoms 
C) fluorine atoms 
D) hydrogen atoms 
A) oxygen atoms 
B) chlorine atoms 
C) fluorine atoms 
D) hydrogen atoms

Question 8

Stratospheric ozone is destroyed and formed at the same rate

Accepted Answer

A) above the equator. 
B) above the Antarctic in its early spring. 
C) above the Antarctic in its early fall. 
D) above the equator and above the Antarctic in its early fall. 
A) above the equator. 
B) above the Antarctic in its early spring. 
C) above the Antarctic in its early fall. 
D) above the equator and above the Antarctic in its early fall.

Question 9

Which is/are part of the Chapman cycle in the stratosphere?
I.Ozone is removed by its reaction with water vapor.
II.Ozone is removed by an interaction with UV radiation.
III.Ozone reacts with oxygen atoms to form oxygen molecules.

Accepted Answer

A) I only 
B) II only 
C) I,II and III 
D) II and III only 
A) I only 
B) II only 
C) I,II and III 
D) II and III only

Question 10

The periodicity of the properties of elements is chiefly due to

Accepted Answer

A) the numbers of electrons in the atoms of the elements. 
B) the distribution of electrons in the atoms of the elements. 
C) the numbers of neutrons and electrons in the atoms of the elements. 
D) both the numbers of electrons in the atoms of the elements and the distribution of electrons in the atoms of the elements. 
A) the numbers of electrons in the atoms of the elements. 
B) the distribution of electrons in the atoms of the elements. 
C) the numbers of neutrons and electrons in the atoms of the elements. 
D) both the numbers of electrons in the atoms of the elements and the distribution of electrons in the atoms of the elements.

Question 11

Light behaves like

Accepted Answer

A) a particle. 
B) a wave. 
C) both a particle and a wave. 
D) neither a particle nor a wave. 
A) a particle. 
B) a wave. 
C) both a particle and a wave. 
D) neither a particle nor a wave.

Question 12

UV-B radiation has a frequency of approximately 1017 s¯1.What is the energy of a photon of this light?

Accepted Answer

A) 1.99 × 10¯42 J 
B) 6.63 × 10¯17 J 
C) 4.19 × 108 J 
D) 1.51 × 1050 J 
A) 1.99 × 10¯42 J 
B) 6.63 × 10¯17 J 
C) 4.19 × 108 J 
D) 1.51 × 1050 J

Question 13

The wavelength of light in the X-ray region of the electromagnetic spectrum is

Accepted Answer

A) smaller than a virus. 
B) intermediate between the size of a bacterial cell and a virus. 
C) about the size of a bacterial cell. 
D) larger than either a bacterial cell or a virus. 
A) smaller than a virus. 
B) intermediate between the size of a bacterial cell and a virus. 
C) about the size of a bacterial cell. 
D) larger than either a bacterial cell or a virus.

Question 14

Which statement is correct?

Accepted Answer

A) UV-A is the most energetic of the three forms of UV light. 
B) UV-B is the most energetic of the three forms of UV light. 
C) UV-C is the most energetic of the three forms of UV light. 
D) UV-A,UV-B,and UV-C are equally energetic. 
A) UV-A is the most energetic of the three forms of UV light. 
B) UV-B is the most energetic of the three forms of UV light. 
C) UV-C is the most energetic of the three forms of UV light. 
D) UV-A,UV-B,and UV-C are equally energetic.

Question 15

Wavelength is the

Accepted Answer

A) number of waves passing a fixed point in one second. 
B) height of the wave. 
C) distance between successive peaks in a wave. 
D) distance between a peak of one wave and the next trough. 
A) number of waves passing a fixed point in one second. 
B) height of the wave. 
C) distance between successive peaks in a wave. 
D) distance between a peak of one wave and the next trough.

Question 16

Which is correct?

Accepted Answer

A) Ozone forms by combining an oxygen atom with an oxygen molecule. 
B) There is a dynamic steady state of ozone in the stratosphere. 
C) UV radiation will dissociate ozone into an oxygen atom and an oxygen molecule. 
D) All of these choices are correct. 
A) Ozone forms by combining an oxygen atom with an oxygen molecule. 
B) There is a dynamic steady state of ozone in the stratosphere. 
C) UV radiation will dissociate ozone into an oxygen atom and an oxygen molecule. 
D) All of these choices are correct.

Question 17

What is special about the South Pole versus the North Pole that leads to ozone depletion only at the south Pole?

Accepted Answer

A) Ozone molecules are broken up by magnetic forces at the South Pole. 
B) The atmosphere is colder at the North Pole than at the South Pole. 
C) Polar stratospheric clouds form almost exclusively at the South Pole. 
D) There is more land mass at the South Pole than at the North Pole. 
A) Ozone molecules are broken up by magnetic forces at the South Pole. 
B) The atmosphere is colder at the North Pole than at the South Pole. 
C) Polar stratospheric clouds form almost exclusively at the South Pole. 
D) There is more land mass at the South Pole than at the North Pole.

Question 18

How many protons,neutrons,and electrons are there in a neutral atom of  ?

Accepted Answer

A) A 
B) B 
C) C 
D) D 
A) A 
B) B 
C) C 
D) D

Question 19

Which color in the rainbow has the shortest wavelength?

Accepted Answer

A) orange 
B) red 
C) yellow 
D) blue 
A) orange 
B) red 
C) yellow 
D) blue

Question 20

Why are HFCs inappropriate for long-term replacement of CFCs?

Accepted Answer

A) They are flammable. 
B) They are very toxic. 
C) They absorb infrared radiation. 
D) They are an appropriate replacement. 
A) They are flammable. 
B) They are very toxic. 
C) They absorb infrared radiation. 
D) They are an appropriate replacement.

In what year will all production and importation of HCFCs end in the United States?

Which of the following compounds is useful for putting out fires and does not deplete stratospheric ozone concentrations?

What is the relationship between stratospheric levels of atomic chlorine and ozone?

What distinguishes the atoms of one element from another?

The Montreal protocol is a

As the ozone hole gets more pronounced,with time,one expects the incidence of skin cancer to

Which product of the ultraviolet decomposition of CFCs acts as the catalyst for ozone decomposition?

Stratospheric ozone is destroyed and formed at the same rate

Which is/are part of the Chapman cycle in the stratosphere? I.Ozone is removed by its reaction with water vapor. II.Ozone is removed by an interaction with UV radiation. III.Ozone reacts with oxygen atoms to form oxygen molecules.

The periodicity of the properties of elements is chiefly due to

Light behaves like

UV-B radiation has a frequency of approximately 10¹⁷ s¯¹.What is the energy of a photon of this light?

The wavelength of light in the X-ray region of the electromagnetic spectrum is

Which statement is correct?

Wavelength is the

Which is correct?

What is special about the South Pole versus the North Pole that leads to ozone depletion only at the south Pole?

How many protons,neutrons,and electrons are there in a neutral atom of ?

Which color in the rainbow has the shortest wavelength?

Why are HFCs inappropriate for long-term replacement of CFCs?

The Air We Breathe

The Chemistry of Global Climate Change

Energy From Combustion

Water for Life

Neutralizing the Threat of Acid Rain

The Fires of Nuclear Fission

Energy From Electron Transfer

The World of Polymers and Plastics

Manipulating Molecules and Designing Drugs

Nutrition: Food for Thought

Genetic Engineering and the Molecules of Life

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Exam 2: Protecting the Ozone Layer

In what year will all production and importation of HCFCs end in the United States?

Which of the following compounds is useful for putting out fires and does not deplete stratospheric ozone concentrations?

What is the relationship between stratospheric levels of atomic chlorine and ozone?

What distinguishes the atoms of one element from another?

The Montreal protocol is a

As the ozone hole gets more pronounced,with time,one expects the incidence of skin cancer to

Which product of the ultraviolet decomposition of CFCs acts as the catalyst for ozone decomposition?

Stratospheric ozone is destroyed and formed at the same rate

Which is/are part of the Chapman cycle in the stratosphere? I.Ozone is removed by its reaction with water vapor. II.Ozone is removed by an interaction with UV radiation. III.Ozone reacts with oxygen atoms to form oxygen molecules.

The periodicity of the properties of elements is chiefly due to

Light behaves like

UV-B radiation has a frequency of approximately 1017 s¯1.What is the energy of a photon of this light?

The wavelength of light in the X-ray region of the electromagnetic spectrum is

Which statement is correct?

Wavelength is the

Which is correct?

What is special about the South Pole versus the North Pole that leads to ozone depletion only at the south Pole?

How many protons,neutrons,and electrons are there in a neutral atom of ?

Which color in the rainbow has the shortest wavelength?

Why are HFCs inappropriate for long-term replacement of CFCs?

The Air We Breathe

The Chemistry of Global Climate Change

Energy From Combustion

Water for Life

Neutralizing the Threat of Acid Rain

The Fires of Nuclear Fission

Energy From Electron Transfer

The World of Polymers and Plastics

Manipulating Molecules and Designing Drugs

Nutrition: Food for Thought

Genetic Engineering and the Molecules of Life

Filters

UV-B radiation has a frequency of approximately 10¹⁷ s¯¹.What is the energy of a photon of this light?