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WorksheetsEnvironmental Chemistry
Total questions: 15
Worksheet time: 15mins
In the graph, the concentration of CFCs is reported in :
ppm (parts per million)
ppb (parts per billion
ppt (parts per trillion)
Years
Which year had the highest concentrations of CFCs in the atmosphere?
1990
1982
1998
1978
By what amount did carbon dioxide in Earth's atmosphere increase between 1960 and 2000?
40 -50 ppm
60 -70 ppm
110 -120 ppm
360 -370 ppm
Which of the following concentrations is higher?
0.2 ppm
2.2 ppm
20.2 ppm
200 ppm
Arrange the following chemicals from most to least toxic: dioxin, nicotine, botulinum toxin A, dieldren.
Dieldren, dioxin, nicotine, botulinum toxin A
Dieldren, nicotine, dioxin, botulinum toxin A
Botulinum toxin A, nicotine, dioxin, dieldren
Botulinum toxin A, dioxin, nicotine, dieldren
Scrubbers are devices installed in smokestacks to
reduce the amount of materials such as SO2 in the smoke they discharge
clean out the stack so smoke can move rapidly upwards
reduce the amount of sulphur in coal before it is burned
clean out the boilers for more efficient operation
Which of the following would decrease concentration of pollutants?
dilution
deposition
biomagnification
inhalation
If a site had been polluted by industrial chemicals, and trees were planted to absorb the chemicals, the technique used is called
genetic engineering
biostimulation
oleophilic
phytoremediation
The reaction that occurred in this experiment is known as…
corrosion
cellular respiration
neutralization
combustion
Water that soaks through the soil and carries dissolved substances into the soil is called…
acid rain
leachate
contaminant
filtrate
The mode of toxic exposure shown here
biomagnification
leaching
inhalation
absorption
Modern sanitary landfills are lined with ______ to prevent ______.
sand, leaching
clay, leaching
sand, run-off
clay, run-off
Which of the following is a primary pollutant in environmental chemistry?
Carbon dioxide (CO2)
Sulfur dioxide (SO2)
Ozone (O3)
Nitric acid (HNO3)
What is the main purpose of using catalytic converters in vehicles?
To increase fuel efficiency
To reduce noise pollution
To convert harmful gases into less harmful substances
To improve engine performance
In the context of environmental chemistry, what does the term 'biodegradable' mean?
A substance that can be broken down by natural processes
A substance that is resistant to chemical breakdown
A substance that is toxic to living organisms
A substance that can be recycled indefinitely
