Questions as text
Q1 · Catalytic cracking is useful in the petrochemical industry 0654/11 Oct/Nov 2009
16 Catalytic cracking is useful in the petrochemical industry. Which two of the listed equations are possible cracking reactions? 1 2C8H18 → C16H34 + H2 2 C10H20 + H2 → C10H22 3 C10H22 → C10H20 + H2 4 C10H22 → C8H18 + C2H4 A 1 and 3 B 1 and 4 C 2 and 3 D 3 and 4
1 marks
Answer: D
This question in 0654/11 Oct/Nov 2009
Q2 · Which statement about methane is not correct? 0654/12 May/June 2011
24 Which statement about methane is not correct? A Methane burns in air to form carbon dioxide and water. B Methane can be obtained from the decay of waste material. C Methane is a fossil fuel. D When methane burns, an endothermic reaction takes place.
1 marks
Answer: D
This question in 0654/12 May/June 2011
Q3 · Large hydrocarbons can be ..….1….. 0654/13 May/June 2011
18 Large hydrocarbons can be ..….1…... to make smaller, more useful molecules. Small hydrocarbon molecules can be …...2…... to make long molecules. Which words correctly complete gaps 1 and 2? 1 2 A cracked distilled B cracked polymerised C distilled polymerised D distilled cracked
1 marks
Answer: B
This question in 0654/13 May/June 2011
Q4 · An alkane molecule undergoes the chemical change shown: H H H H H H H H H H H C C C C C H… 0654/13 May/June 2014
27 An alkane molecule undergoes the chemical change shown: H H H H H H H H H H H C C C C C H H C C C H + H C C H H H H H H H H H What is the name of the chemical change? A cracking B fractional distillation C polymerisation D reduction
1 marks
Answer: A
This question in 0654/13 May/June 2014
Q5 · The structures of compounds X and Y are shown 0654/11 Oct/Nov 2014
23 The structures of compounds X and Y are shown. H H H H H H H H C C C C H H H C C C C H H H H C C C C H H H H H H H compound X compound Y What are the correct formulae for these two compounds? compound X compound Y A C6H14 C6H10 B C6H14 C6H12 C C6H12 C6H10 D C6H12 C6H12
1 marks
Answer: C
This question in 0654/11 Oct/Nov 2014
Q6 · The structures of compounds X and Y are shown 0654/12 Oct/Nov 2014
22 The structures of compounds X and Y are shown. H H H H H H H H C C C C H H H C C C C H H H H C C C C H H H H H H H compound X compound Y What are the correct formulae for these two compounds? compound X compound Y A C6H14 C6H10 B C6H14 C6H12 C C6H12 C6H10 D C6H12 C6H12
1 marks
Answer: C
This question in 0654/12 Oct/Nov 2014
Q7 · The diagram shows a molecule of propane 0654/12 Oct/Nov 2015
18 The diagram shows a molecule of propane. key carbon atom hydrogen atom What is the formula of propane and to which homologous series does propane belong? homologous formula series A C3H6 alkane B C3H6 alkene C C3H8 alkane D C3H8 alkene
1 marks
Answer: C
This question in 0654/12 Oct/Nov 2015
Q8 · Which compound is the main constituent of natural gas? 0654/13 May/June 2016
26 Which compound is the main constituent of natural gas? A B H H H H H H H H C C C C H H C C C H H H H H H H H C D H H H H C C H H C H H H H
1 marks
Answer: D
This question in 0654/13 May/June 2016
Q9 · A hydrocarbon contains twice as many hydrogen atoms as carbon atoms 0654/11 May/June 2019
15 A hydrocarbon contains twice as many hydrogen atoms as carbon atoms. What is the formula of this compound? A C3H6 B C4H10 C C2H6O D C3H6O
1 marks
Answer: A
This question in 0654/11 May/June 2019
Q10 · Which diagram represents a molecule of ethane? 0654/12 Oct/Nov 2019
26 Which diagram represents a molecule of ethane? A B C D H H H H H H H H C H C C H C C H H C C O H H H H H H H H
1 marks
Answer: C
This question in 0654/12 Oct/Nov 2019
Q11 · The structures of three organic compounds are shown 0654/11 May/June 2020
26 The structures of three organic compounds are shown. CH2 CH2 CH3 CH2 CH2 CH3 CH3 CH3 CH3 CH2 CH3 CH2 CH2 Which statement about these three compounds is correct? A They are alcohols. B They are alkenes. C They are saturated. D They do not burn.
1 marks
Answer: C
This question in 0654/11 May/June 2020
Q12 · Methane is a covalent compound 0654/11 Oct/Nov 2020
26 Methane is a covalent compound. Which statement about methane is correct? A It conducts electricity. B It is a gas at room temperature. C It is an unsaturated hydrocarbon. D It is formed from a metal and a non-metal.
1 marks
Answer: B
This question in 0654/11 Oct/Nov 2020
Q13 · What is the main constituent of natural gas? 0654/11 May/June 2021
26 What is the main constituent of natural gas? A ethane B ethanol C ethene D methane
1 marks
Answer: D
This question in 0654/11 May/June 2021
Q14 · There are three times as many hydrogen atoms as carbon atoms in one molecule of… 0654/12 Oct/Nov 2022
16 There are three times as many hydrogen atoms as carbon atoms in one molecule of hydrocarbon X. What is the formula of X? A CH4 B C2H4 C C2H6 D C2H5OH
1 marks
Answer: C
This question in 0654/12 Oct/Nov 2022
Q15 · Which statement about alkanes is correct? 0654/13 Oct/Nov 2022
27 Which statement about alkanes is correct? A They rapidly decolourise aqueous bromine. B They are unsaturated hydrocarbons. C They are used to make polymers. D They can be used as fuels.
1 marks
Answer: D
This question in 0654/13 Oct/Nov 2022
Q16 · Which structure represents the main constituent of natural gas? 0654/12 Feb/March 2024
26 Which structure represents the main constituent of natural gas? A B C D H H H H H H H H C H H C C H C C H C C O H H H H H H H H
1 marks
Answer: A
This question in 0654/12 Feb/March 2024
Q17 · Which compound is the main constituent of natural gas? 0654/12 May/June 2025
25 Which compound is the main constituent of natural gas? A B H H H H H H H H C C C C H H C C C H H H H H H H H C D H H H H C C H H C H H H H
1 marks
Answer: D
This question in 0654/12 May/June 2025
Q18 · Which statement about alkanes is correct? 0654/12 May/June 2025
26 Which statement about alkanes is correct? A They contain one double covalent bond. B They contain only single covalent bonds. C They form polymers. D They react with aqueous bromine.
1 marks
Answer: B
This question in 0654/12 May/June 2025
Q19 · Which compound is the main constituent of natural gas? 0654/13 May/June 2025
25 Which compound is the main constituent of natural gas? A B H H H H H H H H C C C C H H C C C H H H H H H H H C D H H H H C C H H C H H H H
1 marks
Answer: D
This question in 0654/13 May/June 2025
Q20 · Which statement about alkanes is correct? 0654/13 May/June 2025
26 Which statement about alkanes is correct? A They contain one double covalent bond. B They contain only single covalent bonds. C They form polymers. D They react with aqueous bromine.
1 marks
Answer: B
This question in 0654/13 May/June 2025
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