Air quality and climate — Paper 1 · IGCSE Science - Combined 0653

20 Which pie chart correctly shows the proportions of gases in the air? A B C D N2 N2 O2 N2 N2 O2 other O2 CO2 gases O2 CO2 other CO2 other CO2 other gases gases gases

1 marks

Answer: A

This question in 0653/11 Oct/Nov 2005

21 The diagram shows an experiment on combustion. gas jar oxygen substance litmus solution burning The litmus solution turns red. Which substance is burning? A copper B magnesium C sulphur D zinc

1 marks

Answer: C

This question in 0653/11 Oct/Nov 2005

17 Argon is a gas used to fill lamp bulbs. What are sources of this argon? the air seawater A v v B v x Cc x v D x x

1 marks

Answer: B

This question in 0653/11 May/June 2006

19 Which element, present in fossil fuels, is responsible for causing ‘acid rain’? A carbon B hydrogen C oxygen D sulphur

1 marks

Answer: D

This question in 0653/11 Oct/Nov 2006

20 The diagrams show some molecules of substances present in air. Different circles represent atoms of different elements. rw} Le} lel ie Which elements could be shown as @) and @? © = nitrogen @ = oxygen A Jv v B Jv x Cc x v D x x

1 marks

Answer: A

This question in 0653/11 Oct/Nov 2006

20 The diagrams show molecules of four gases present in clean air. Different circles represent atoms of different elements. Which elements could be shown as ? A hydrogen nitrogen B hydrogen oxygen C oxygen hydrogen D oxygen nitrogen

1 marks

Answer: D

This question in 0653/11 Oct/Nov 2007

17 How many atoms are present in each of the molecules of the following components in air? water nitrogen noble gases oxygen vapour A 1 1 1 2 B 2 1 2 3 C 2 2 2 2 D 2 2 2 3

1 marks

Answer: B

This question in 0653/11 May/June 2008

21 The diagram shows an experiment on the composition of air. air reagent to remove reagent to remove water carbon dioxide oxygen The volume of the air that passes into the apparatus is 100 cm3. What is the volume and the composition of the gas collected in the measuring cylinder? volume / cm3 composition A 20 pure nitrogen B 20 nitrogen and other gases C 80 pure nitrogen D 80 nitrogen and other gases

1 marks

Answer: D

This question in 0653/11 May/June 2008

21 Polluted air contains toxic oxides of the elements carbon, C, and sulfur, S, emitted from car exhausts. Which row in the table is correct? toxic oxide toxic oxide is acidic formula is XO A C only C only B C only S only C S only C only D S only S only

1 marks

Answer: C

This question in 0653/11 May/June 2009

26 Two products, X and Y, are formed in the complete combustion of methane. What are X and Y? A carbon and hydrogen B carbon and water C carbon dioxide and hydrogen D carbon dioxide and water

1 marks

Answer: D

This question in 0653/11 Oct/Nov 2010

20 Carbon monoxide gas is present in car exhausts. Why is this gas a pollutant? A It causes acid rain. B It causes asthma. C It damages buildings. D It is poisonous.

1 marks

Answer: D

This question in 0653/11 May/June 2011

22 Carbon monoxide gas is present in car exhausts. Why is this gas a pollutant? A It causes acid rain. B It causes asthma. C It damages buildings. D It is poisonous.

1 marks

Answer: D

This question in 0653/12 May/June 2011

20 Sulfur dioxide is formed as a pollutant when fossil fuels are burned. Which properties does sulfur dioxide have? toxic acidic corrosive v v v 0 Oo WwW > v v x v x x x x x

1 marks

Answer: A

This question in 0653/11 Oct/Nov 2011

17 Sulfur dioxide is formed as a pollutant when fossil fuels are burned. Which properties does sulfur dioxide have? toxic acidic corrosive v v v 0 0O WD > v v x v x x x x x

1 marks

Answer: A

This question in 0653/12 Oct/Nov 2011

18 Sulfur dioxide is formed as a pollutant when fossil fuels are burned. Which properties does sulfur dioxide have? toxic acidic corrosive v v v 0 0O WwW > v v x v x x x x x

1 marks

Answer: A

This question in 0653/13 Oct/Nov 2011

25 The diagrams show molecules of four gases present in clean air. Different circles represent atoms of different elements. Which elements are shown as and ? A hydrogen nitrogen B hydrogen oxygen C oxygen hydrogen D oxygen nitrogen

1 marks

Answer: D

This question in 0653/13 May/June 2012

18 The diagram shows an experiment on the rusting of iron. tap tap gas P X iron filings oil The flask is filled with gas P. The taps are closed and the apparatus is left for a week. The experiment is repeated with four different gases. What happens to the oil level at X? gas P oil level at X A damp nitrogen rises B damp oxygen falls C dry nitrogen falls D dry oxygen rises

1 marks

Answer: B

This question in 0653/12 May/June 2013

24 P, Q, R and S are four gases found in air. P is very unreactive. Q makes up 21% of the air. R makes up 78% of the air. S is formed when fossil fuels are burned. Which row is correct? P Q R S A argon nitrogen oxygen carbon dioxide B argon oxygen nitrogen carbon dioxide C carbon dioxide oxygen nitrogen argon D carbon dioxide nitrogen oxygen argon

1 marks

Answer: B

This question in 0653/12 May/June 2013

19 Which statements about air are correct? 1 Air contains a small amount of argon which is a noble gas. 2 Air is made up of 78% oxygen and 21% nitrogen. 3 Air contains carbon dioxide which is a product of both respiration and the combustion of natural gas. A 1, 2 and 3 B 1 and 2 only C 1 and 3 only D 2 and 3 only

1 marks

Answer: C

This question in 0653/13 May/June 2013

13 What is the effect of cutting down large numbers of trees? A Flooding is less likely to occur. B It increases the amount of carbon dioxide in the air. C It increases the amount of methane in the air. D It prevents the extinction of animal species.

1 marks

Answer: B

This question in 0653/11 Oct/Nov 2013

24 80 cm3 of dry air is passed over hot copper until there is no further change in volume. dry air copper heat The volume of air decreases by 16 cm3. Which gas reacts with the copper? A carbon dioxide B nitrogen C oxygen D water vapour

1 marks

Answer: C

This question in 0653/11 Oct/Nov 2013

24 80 cm3 of dry air is passed over hot copper until there is no further change in volume. dry air copper heat The volume of air decreases by 16 cm3. Which gas reacts with the copper? A carbon dioxide B nitrogen C oxygen D water vapour

1 marks

Answer: C

This question in 0653/12 Oct/Nov 2013

22 60 cm3 of dry air is passed over hot copper until all the oxygen has reacted. dry air copper heat Which volume of gas remains at the end of the reaction? A 6 cm3 B 12 cm3 C 48 cm3 D 54 cm3

1 marks

Answer: C

This question in 0653/13 Oct/Nov 2013

26 The diagram shows the composition of air. Which gas is shown by the shaded part? A carbon dioxide B nitrogen C noble gases D oxygen

1 marks

Answer: B

This question in 0653/11 May/June 2014

26 Which row gives the percentage by volume of the gases in the air? highest lowest percentage percentage A nitrogen oxygen other gases B nitrogen other gases oxygen C oxygen nitrogen other gases D oxygen other gases nitrogen

1 marks

Answer: A

This question in 0653/12 May/June 2014

25 The diagram shows the composition of air. Which gas is shown by the shaded part? A carbon dioxide B nitrogen C noble gases D oxygen

1 marks

Answer: B

This question in 0653/13 May/June 2014

27 The diagram shows the approximate composition of air. other gases 1% gas X 21% gas Y 78% What are gases X and Y? gas X gas Y A carbon dioxide oxygen B nitrogen oxygen C oxygen carbon dioxide D oxygen nitrogen

1 marks

Answer: D

This question in 0653/11 Oct/Nov 2014

26 The diagram shows the approximate composition of air. other gases 1% gas X 21% gas Y 78% What are gases X and Y? gas X gas Y A carbon dioxide oxygen B nitrogen oxygen C oxygen carbon dioxide D oxygen nitrogen

1 marks

Answer: D

This question in 0653/12 Oct/Nov 2014

27 Which pie chart shows the composition of clean air? A B key nitrogen oxygen other gases C D

1 marks

Answer: A

This question in 0653/13 Oct/Nov 2014

26 Which process does not produce carbon dioxide? A combustion of coal B reaction of calcium carbonate with hydrochloric acid C respiration D rusting of iron

1 marks

Answer: D

This question in 0653/13 May/June 2015

26 What are the approximate percentages by volume of nitrogen and oxygen in clean air? nitrogen oxygen A 1 99 B 20 80 C 80 20 D 99 1

1 marks

Answer: C

This question in 0653/11 Oct/Nov 2015

26 A 100 cm3 sample of air is passed into the apparatus as shown. air gas measuring cylinder reagent to remove reagent to remove water all carbon dioxide all oxygen What is the volume and the composition of the gas collected in the measuring cylinder? volume / cm3 composition A 21 pure nitrogen B 21 nitrogen and other gases C 79 pure nitrogen D 79 nitrogen and other gases

1 marks

Answer: D

This question in 0653/11 Oct/Nov 2016

26 A 100 cm3 sample of air is passed into the apparatus as shown. air gas measuring cylinder reagent to remove reagent to remove water all carbon dioxide all oxygen What is the volume and the composition of the gas collected in the measuring cylinder? volume / cm3 composition A 21 pure nitrogen B 21 nitrogen and other gases C 79 pure nitrogen D 79 nitrogen and other gases

1 marks

Answer: D

This question in 0653/12 Oct/Nov 2016

26 A 100 cm3 sample of air is passed into the apparatus as shown. air gas measuring cylinder reagent to remove reagent to remove water all carbon dioxide all oxygen What is the volume and the composition of the gas collected in the measuring cylinder? volume / cm3 composition A 21 pure nitrogen B 21 nitrogen and other gases C 79 pure nitrogen D 79 nitrogen and other gases

1 marks

Answer: D

This question in 0653/13 Oct/Nov 2016

13 Which two gases contribute most to global warming? A carbon dioxide and methane B carbon monoxide and carbon dioxide C methane and oxygen D oxygen and carbon monoxide

1 marks

Answer: A

This question in 0653/12 Feb/March 2017

26 Which pie chart shows the proportions of gases in clean air? A B C D N2 N2 O2 N2 N2 O2 other O2 CO2 gases O2 CO2 CO2 other other CO2 other gases gases gases

1 marks

Answer: A

This question in 0653/11 May/June 2017

26 Which pie chart shows the proportions of gases in clean air? A B C D N2 N2 O2 N2 N2 O2 other O2 CO2 gases O2 CO2 CO2 other other CO2 other gases gases gases

1 marks

Answer: A

This question in 0653/12 May/June 2017

26 Which pie chart shows the proportions of gases in clean air? A B C D N2 N2 O2 N2 N2 O2 other O2 CO2 gases O2 CO2 CO2 other other CO2 other gases gases gases

1 marks

Answer: A

This question in 0653/13 May/June 2017

26 P, Q, R and S are four gases found in clean air. P is very unreactive. Q makes up 21% of the air. R makes up 78% of the air. S is formed when fossil fuels are burned. Which row is correct? P Q R S A argon nitrogen oxygen carbon dioxide B argon oxygen nitrogen carbon dioxide C carbon dioxide oxygen nitrogen argon D carbon dioxide nitrogen oxygen argon

1 marks

Answer: B

This question in 0653/11 Oct/Nov 2017

27 Which power stations burn fossil fuels? 1 a coal-fired power station 2 a nuclear power station 3 an oil-fired power station A 1, 2 and 3 B 1 and 2 only C 1 and 3 only D 2 and 3 only

1 marks

Answer: C

This question in 0653/11 Oct/Nov 2017

26 P, Q, R and S are four gases found in clean air. P is very unreactive. Q makes up 21% of the air. R makes up 78% of the air. S is formed when fossil fuels are burned. Which row is correct? P Q R S A argon nitrogen oxygen carbon dioxide B argon oxygen nitrogen carbon dioxide C carbon dioxide oxygen nitrogen argon D carbon dioxide nitrogen oxygen argon

1 marks

Answer: B

This question in 0653/12 Oct/Nov 2017

27 Which power stations burn fossil fuels? 1 a coal-fired power station 2 a nuclear power station 3 an oil-fired power station A 1, 2 and 3 B 1 and 2 only C 1 and 3 only D 2 and 3 only

1 marks

Answer: C

This question in 0653/12 Oct/Nov 2017

26 P, Q, R and S are four gases found in clean air. P is very unreactive. Q makes up 21% of the air. R makes up 78% of the air. S is formed when fossil fuels are burned. Which row is correct? P Q R S A argon nitrogen oxygen carbon dioxide B argon oxygen nitrogen carbon dioxide C carbon dioxide oxygen nitrogen argon D carbon dioxide nitrogen oxygen argon

1 marks

Answer: B

This question in 0653/13 Oct/Nov 2017

27 Which power stations burn fossil fuels? 1 a coal-fired power station 2 a nuclear power station 3 an oil-fired power station A 1, 2 and 3 B 1 and 2 only C 1 and 3 only D 2 and 3 only

1 marks

Answer: C

This question in 0653/13 Oct/Nov 2017

26 Which chemical reactions produce carbon dioxide? hydrochloric hydrochloric acid acid complete + + combustion | respiration calcium sodium of methane carbonate hydroxide A Jv x Jv WA B Jv x Jv x Cc Jv x x Jv D x Jv Jv WA

1 marks

Answer: A

This question in 0653/11 May/June 2018

13 Which two gases contribute towards global warming? A carbon dioxide and methane B carbon dioxide and nitrogen C nitrogen and water vapour D oxygen and methane

1 marks

Answer: A

This question in 0653/12 May/June 2018

26 A sample of clean air is bubbled through sodium hydroxide to remove carbon dioxide. It is then passed over heated copper to remove oxygen. Which gases are left in the air at the end of the experiment? A nitrogen, noble gases and water vapour B nitrogen and noble gases only C nitrogen only D noble gases and water vapour only

1 marks

Answer: A

This question in 0653/12 May/June 2018

13 Which two gases contribute towards global warming? A carbon dioxide and methane B carbon dioxide and nitrogen C nitrogen and water vapour D oxygen and methane

1 marks

Answer: A

This question in 0653/13 May/June 2018

26 A sample of clean air is bubbled through sodium hydroxide to remove carbon dioxide. It is then passed over heated copper to remove oxygen. Which gases are left in the air at the end of the experiment? A nitrogen, noble gases and water vapour B nitrogen and noble gases only C nitrogen only D noble gases and water vapour only

1 marks

Answer: A

This question in 0653/13 May/June 2018

25 The diagram shows the composition of clean air. other gases 1% gas X 21% gas Y 78% What are X and Y? X Y A carbon dioxide oxygen B nitrogen oxygen C oxygen carbon dioxide D oxygen nitrogen

1 marks

Answer: D

This question in 0653/12 Feb/March 2019

25 Which gas is a greenhouse gas? A argon B carbon monoxide C methane D nitrogen

1 marks

Answer: C

This question in 0653/12 May/June 2019

13 Which graph shows the relationship between the increase in deforestation and the carbon dioxide concentrations in the atmosphere? A B arbitrary arbitrary units units time time key deforestation C D CO2 concentration arbitrary arbitrary units units time time

1 marks

Answer: A

This question in 0653/13 May/June 2019

26 Which gas is not present in clean air? A carbon monoxide B neon C nitrogen D water vapour

1 marks

Answer: A

This question in 0653/11 Oct/Nov 2019

26 What is the composition of clean air? A 78% nitrogen, 21% carbon dioxide and small amounts of other gases B 78% nitrogen, 21% oxygen and small amounts of other gases C 78% oxygen, 21% carbon dioxide and small amounts of other gases D 78% oxygen, 21% nitrogen and small amounts of other gases

1 marks

Answer: B

This question in 0653/12 Oct/Nov 2019

26 What is the composition of clean air? A 78% nitrogen, 21% carbon dioxide and small amounts of other gases B 78% nitrogen, 21% oxygen and small amounts of other gases C 78% oxygen, 21% carbon dioxide and small amounts of other gases D 78% oxygen, 21% nitrogen and small amounts of other gases

1 marks

Answer: B

This question in 0653/13 Oct/Nov 2019

26 Which gases damage buildings? A carbon dioxide and carbon monoxide B carbon dioxide and sulfur dioxide C carbon monoxide and nitrogen dioxide D nitrogen dioxide and sulfur dioxide

1 marks

Answer: D

This question in 0653/12 Feb/March 2020

26 Which volume of air contains about 20 cm3 of oxygen? A 25 cm3 B 50 cm3 C 80 cm3 D 100 cm3

1 marks

Answer: D

This question in 0653/11 May/June 2020

26 Which process does not produce carbon dioxide? A fractional distillation of petroleum B the complete combustion of methane C the reaction between an acid and a carbonate D the thermal decomposition of calcium carbonate

1 marks

Answer: A

This question in 0653/11 Oct/Nov 2020

26 Decane is a hydrocarbon. Which greenhouse gas is made during the complete combustion of decane? A carbon dioxide B carbon monoxide C hydrogen D methane

1 marks

Answer: A

This question in 0653/13 Oct/Nov 2020

25 A petrol car engine takes in clean air and lets out exhaust gases. exhaust clean air in gases out Which gas has a higher concentration in the exhaust gases than in clean air? A argon B carbon dioxide C nitrogen D oxygen

1 marks

Answer: B

This question in 0653/12 Feb/March 2021

26 A large quantity of damp iron filings is added to clean air in a sealed container. The container is left for several weeks. The composition of the air in the container changes. Which gas decreases in composition? A argon B carbon dioxide C nitrogen D oxygen

1 marks

Answer: D

This question in 0653/13 May/June 2022

25 Which statements about air pollutants are correct? 1 Sulfur dioxide can damage buildings. 2 Oxides of nitrogen are harmful to health. 3 Carbon monoxide is a poisonous gas. 4 Carbon monoxide can damage buildings. A 1, 2 and 3 B 1 and 2 only C 2, 3 and 4 D 3 and 4 only

1 marks

Answer: A

This question in 0653/12 Feb/March 2023

26 Which statement about a pollutant in the air is correct? A Carbon dioxide is produced by the incomplete combustion of fossil fuels. B Carbon monoxide causes acid rain. C Oxides of nitrogen blacken the surface of buildings. D Sulfur dioxide causes breathing difficulties.

1 marks

Answer: D

This question in 0653/13 May/June 2023

25 Which statement about carbon dioxide is not correct? A Carbon dioxide is formed when calcium carbonate is heated. B Carbon dioxide is used up during respiration. C Clean air contains less than 1% carbon dioxide. D When fossil fuels are burned, carbon dioxide is produced.

1 marks

Answer: B

This question in 0653/11 Oct/Nov 2023

25 Which gases are greenhouse gases? A carbon dioxide and methane B carbon dioxide and oxygen C methane and nitrogen D nitrogen and oxygen

1 marks

Answer: A

This question in 0653/12 Oct/Nov 2023

25 Which gases are greenhouse gases? A carbon dioxide and methane B carbon dioxide and oxygen C methane and nitrogen D nitrogen and oxygen

1 marks

Answer: A

This question in 0653/13 Oct/Nov 2023

25 Which pollutant gases result in damage to buildings? A carbon dioxide and carbon monoxide B carbon dioxide and sulfur dioxide C carbon monoxide and nitrogen dioxide D oxides of nitrogen and sulfur dioxide

1 marks

Answer: D

This question in 0653/12 Feb/March 2024

25 Which pie chart shows the proportions of gases in clean air? A B C D N2 N2 O2 N2 N2 O2 other O2 CO2 gases O2 CO2 CO2 other other CO2 other gases gases gases

1 marks

Answer: A

This question in 0653/11 May/June 2024

25 What is the approximate percentage of carbon dioxide in clean air? A 0.04% B 2% C 20% D 80%

1 marks

Answer: A

This question in 0653/11 Oct/Nov 2024

24 A 100 cm3 sample of clean air is passed into the apparatus as shown. air gas measuring cylinder reagent to remove reagent to remove water all carbon dioxide all oxygen What is the volume and the composition of the gas collected in the measuring cylinder? volume / cm3 composition A 21 pure nitrogen B 21 nitrogen and other gases C 79 nitrogen and other gases D 79 pure nitrogen

1 marks

Answer: C

This question in 0653/12 Oct/Nov 2024

25 Which substance is a greenhouse gas? A carbon monoxide B chlorine C methane D nitrogen

1 marks

Answer: C

This question in 0653/12 Oct/Nov 2024

24 A 100 cm3 sample of clean air is passed into the apparatus as shown. air gas measuring cylinder reagent to remove reagent to remove water all carbon dioxide all oxygen What is the volume and the composition of the gas collected in the measuring cylinder? volume / cm3 composition A 21 pure nitrogen B 21 nitrogen and other gases C 79 nitrogen and other gases D 79 pure nitrogen

1 marks

Answer: C

This question in 0653/13 Oct/Nov 2024

25 Which substance is a greenhouse gas? A carbon monoxide B chlorine C methane D nitrogen

1 marks

Answer: C

This question in 0653/13 Oct/Nov 2024

23 Which volume of air contains about 20 cm3 of oxygen? A 20 cm3 B 50 cm3 C 80 cm3 D 100 cm3

1 marks

Answer: D

This question in 0653/11 Oct/Nov 2025

23 Which statement about air is correct? A Air is a mixture of elements and compounds. B Carbon monoxide in the air is a particulate. C Clean, dry air consists of 78% oxygen. D Nitrogen in the air causes iron to rust.

1 marks

Answer: A

This question in 0653/12 Oct/Nov 2025

23 Which statement about air is correct? A Air is a mixture of elements and compounds. B Carbon monoxide in the air is a particulate. C Clean, dry air consists of 78% oxygen. D Nitrogen in the air causes iron to rust.

1 marks

Answer: A

This question in 0653/13 Oct/Nov 2025