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WorksheetsAtmosphere and environment 2
Total questions: 26
Worksheet time: 14mins
Which method of water purification can be used to obtain drinkable water from seawater?
chlorination
desalination
filtration
sedimentation
When volcano erupts, which gas is produced in significant amounts?
carbon monoxide
methane
ozone
sulfur dioxide
What is not essential for photosynthesis?
carbon dioxide
sugar
light
water
Which of these processes can be used to purify water containing insoluble impurities?
1 chlorination
2 desalination
3 distillation
4 filtration
1 and 2
2 and 3
3 and 4
4 only
Which gas will react with ozone in the upper atmosphere of the Earth?
CF2Cl2
CH4
CO2
SO2
The noble gases, argon, helium, krypton and xenon, are present in air.
Which noble gas is present in the largest proportion?
argon
helium
krypton
xenon
Which gas is most likely to react with limestone?
ammonia
carbon monoxide
methane
sulfur dioxide
Which row shows both the correct source and the correct effect of the named pollutant?
A
B
C
D
Which gas can be removed from the exhaust gases of a petrol-powered car by its catalytic converter?
carbon monoxide
carbon dioxide
nitrogen
steam
Salt containing which of the following anions are always soluble in water?
carbonates
chlorides
nitrates
sulfates
Which process would destroy the bacteria in water?
chlorination
desalination
filtration
treatment with carbon
The processes photosynthesis, respiration and fermentation all change the amount of carbon dioxide in the atmosphere.
Which processes increase the amount of carbon dioxide in the atmosphere?
photosynthesis and fermentation
photosynthesis only
respiration and fermentation
respiration only
A sample of air was bubbled into water. The pH of the water slowly changed from 7 to 6.
Which gas in the sample caused this change?
carbon dioxide
carbon monoxide
nitrogen
oxygen
A sample of tap water gave a white precipitate with acidified silver nitrate.
What does this show about the tap water?
It contained chloride
It contained harmful microbes
It contained nitrates
It has not been filtered
Which gas cannot be removed from the exhaust gases of a petrol-powered car by its catalytic converter?
carbon dioxide
carbon monoxide
hydrocarbons
nitrogen dioxide
The gases coming from a car’s exhaust contain oxides of nitrogen.
How are these oxides formed?
Nitrogen reacts with carbon dioxide
Nitrogen reacts with carbon monoxide
Nitrogen reacts with oxygen
Nitrogen reacts with petrol
A catalytic converter in a car exhaust system speeds up the change of pollutants into less harmful products.
Which change does not occur in a catalytic converter?
carbon dioxide → carbon
carbon monoxide → carbon dioxide
nitrogen oxides → nitrogen
unburnt hydrocarbons → carbon dioxide and water
Which type of water in the left-hand column is linked correctly to a statement in the right hand column?
A
B
C
D
Natural gas, petroleum and diesel are all used as energy sources.
Which gas is not produced when these sources are burned?
carbon dioxide
carbon monoxide
hydrogen
water
Four current problems in our atmosphere are listed.
1 acid rain
2 depletion of ozone layer
3 presence of greenhouse gases
4 incomplete combustion of carbon compounds
Which atmospheric pollutant is responsible for each problem?
W chlorofluorocarbons
X sulfur dioxide
Y carbon monoxide
Z carbon dioxide
A
B
C
D
Methane is a greenhouse gas.
Which process releases methane into the air?
combustion of petrol
decay of vegetable matter
photosynthesis
volcanic activity
Which gas, present in pond water, decreases in concentration during eutrophication?
carbon dioxide
methane
nitrogen
oxygen
The following stages happen during eutrophication
1 increase in growth of algae
2 increase in nitrate concentration
3 death of aquatic plants
4 decrease in dissolved oxygen
In which order do these stages occur?
1 → 2 → 3 → 4
1 → 2 → 4 → 3
2 → 1 → 3 → 4
2 → 1 → 4 → 3
Why are catalytic converters fitted to car exhausts?
to decrease the amount of carbon dioxide emitted
to decrease the amount of nitrogen oxides emitted
to improve energy conservation
to reduce global warming
Which gas is mainly responsible for the green house effect?
H2
O2
CO2
Water vapours
Where you will find the ozone layer?
stratosphere
thermosphere
exosphere
mesosphere
