Potential Environmental Impacts of Vapours

Question 1

The gaseous pollutant that contributes to acid rain is

a) ozone
b) carbon dioxide
c) carbon monoxide
d) mercaptan
e) sulphur dioxide

Answer 1

e) sulphur dioxide

Question 2

Nitrogen oxides are referred collectively as
a) NO's
b) NO
2
c) N O
2
d) NO
X
e) N O
2 5

Answer 2

d) NO

X

Question 3

The upper level gas that shields the earth from ultraviolet
radiation is
a) ozone
b) methane
c) carbon dioxide
d) chlorofluorocarbons
e) nitrogen

Answer 3

a) ozone

Question 4

The gaseous pollutant that contributes to ozone depletion in
the stratosphere is
a) nitrous oxide
b) sulphur oxide
c) carbon dioxide
d) carbon monoxide
e) methane

Answer 4

a) nitrous oxide

Question 5

A gaseous pollutant that contributes to acid rain is

a) mercaptan
b) carbon dioxide
c) methane
d) nitrous oxides
e) ozone

Answer 5

d) nitrous oxides

Question 6

The main components of acid rain are

a) carbonic acid and sulphuric acid
b) nitric acid and carbonic acid
c) nitric acid and sulphuric acid
d) sulphuric acid and acetic acid
e) sulphuric acid and carbonic acid

Answer 6

c) nitric acid and sulphuric acid

Question 7

The greatest effect of acid rain is on

a) leaves
b) plant stems
c) roots
d) plant reproductive systems
e) tree bark

Answer 7

c) roots

Question 8

Incomplete combustion of fuel is responsible for the
production of
a) water vapour
b) carbon dioxide
c) hydrogen sulphide
d) sulphur dioxide
e) carbon monoxide

Answer 8

e) carbon monoxide

Question 9

In order for acid rain to be formed

a) atmospheric temperatures must be correct
b) water vapour must be present
c) sunlight must be present
d) water vapour and cool temperatures must apply
e) water vapour and sunlight must be present

Answer 9

e) water vapour and sunlight must be present

Question 10

Methane gas is sometimes produced by

a) insufficient combustion air
b) decomposition of organic matter in a swamp
c) the burning of plastics
d) high intensity sunlight acting on ozone
e) discharging Halon fire extinguishers

Answer 10

b) decomposition of organic matter in a swamp

Question 11

Greenhouse gases allow

a) high energy waves to pass
b) low energy waves to pass
c) long energy waves to pass
d) short energy waves to pass
e) allow all energy levels to pass

Answer 11

a) high energy waves to pass

Question 12

Carbon dioxide is responsible for

a) 20% of greenhouse gases
b) 30% of greenhouse gases
c) 40% of greenhouse gases
d) 50% of greenhouse gases
e) 60% of greenhouse gases

Answer 12

d) 50% of greenhouse gases

Question 13

Ozone is harmful at

a) stratospheric levels in the atmosphere
b) substratospheric levels in the atmosphere
c) upper levels in the atmosphere
d) all levels in the atmosphere
e) lower levels in the atmosphere

Answer 13

e) lower levels in the atmosphere

Question 14

Chlorofluorocarbons
a) contribute to the acid rain problem
b) destroy ozone after they reach the stratosphere
c) combine with ozone to produce toxins
d) are the main heat trapping gases responsible for the
greenhouse effect
e) break down and become harmless as they rise in the
atmosphere

Answer 14

b) destroy ozone after they reach the stratosphere

Question 15

The greenhouse effect is responsible for

a) heart and circulatory system strain
b) the diminishing maple sugar industry
c) drought conditions
d) fouling on fish gills
e) the death of microscopic life in lakes

Answer 15

c) drought conditions

Question 16

The most common method of removing sulphur dioxide from flue
gases involves the use of
a) caustic soda
b) limestone
c) an alkali wash
d) sodium carbonate
e) a dilute sulphuric acid wash

Answer 16

b) limestone

Question 17

The conversion of nitrogen to nitrogen oxides occurs at
temperatures above
a) 1,250 degrees C
b) 1,450 degrees C
c) 1,650 degrees C
d) 1,850 degrees C
e) 2,250 degrees C

Answer 17

c) 1,650 degrees C

Question 18

To reduce nitrogen oxides in the flue gas, the dual register
burner
a) reduces turbulence to delay combustion hence reducing
temperatures
b) completes combustion in the burner tube before the
furnace area
c) supplies cooling air to reduce furnace temperature
d) increases turbulence for most efficient combustion
e) uses maximum excess air for combustion at high
temperatures

Answer 18

a) reduces turbulence to delay combustion hence reducing

temperatures

Question 19

Hydrogen as an alternative fuel is considered ideal because
a) it burns at low temperatures therefore minimizing
nitrogen oxide formation
b) it has nearly the same heating value as carbon
c) it is safe and easy to store
d) water vapour is the only product of combustion
e) the cost of production is minimal

Answer 19

d) water vapour is the only product of combustion

Question 20

Regenerable systems used for flue gas desulphurization
a) are less expensive than non-regenerable methods
b) use lime or limestone in scrubbing the flue gas
c) produce a marketable by-product
d) are better developed and more widely applied than
non-regenerable systems
e) produce no marketable by-product

Answer 20

c) produce a marketable by-product