Chemistry 0620 · IGCSE
Alcohols
100 practice questions on Alcohols, with worked solutions and instant marking.
Ethanol can be made from either ethene or sugar. For each route, which type of chemical reaction is involved?
Feb/March 2017
Ethanol can be made from ethene or from sugar. What kind of chemical reaction is involved in each of these two cases?
Feb/March 2017
How is ethanol made by fermentation?
Feb/March 2018
By what process is ethanol produced through fermentation?
Feb/March 2018
Alcohols form a homologous series of organic compounds that share the same general formula.
Feb/March 2018
Ethanol is produced in large quantities by fermentation. Which statement about fermentation is correct?
Feb/March 2019
Which row gives details of how ethanol is produced and what its properties are?
Feb/March 2020
Which row gives the description of ethanol production and its properties?
Feb/March 2020
What is the word equation for making ethanol?
Feb/March 2023
Ethanol is made on an industrial scale by fermentation and also by a catalysed addition reaction with steam. Which row describes one advantage of each process?
Feb/March 2023
In Fig. 6.1, circle the alcohol functional group.
Feb/March 2023
Ethanol is produced by two different methods. What starting materials are used in the two methods to produce ethanol?
Feb/March 2025
In a reaction analogous to the oxidation of ethanol, propan-1-ol is oxidised by acidified aqueous potassium manganate(VII). Which compound is formed when propan-1-ol is oxidised with acidified aqueous potassium manganate(VII)?
Feb/March 2025
Which statements describe disadvantages of producing ethanol by fermentation?
Feb/March 2025
What substance is employed in making ethanol from ethene?
May/June 2016
What term is used for the conversion of glucose into ethanol?
May/June 2016
Which statement concerning ethanol is correct?
May/June 2016
When liquid W undergoes complete combustion, it produces carbon dioxide and water. Liquid W is a compound made from carbon, hydrogen and oxygen. An aqueous solution of liquid W has $\text{pH}~7$. What is liquid W?
May/June 2016
What advantage does producing ethanol by fermentation of sugar have over the catalytic addition of steam to ethene?
May/June 2016
What advantage does making ethanol by fermenting sugar have over the catalytic addition of steam to ethene?
May/June 2016
What is one advantage of making ethanol by fermenting sugar instead of by adding steam to ethene using a catalyst?
May/June 2016
Ethanol has two production methods. method 1: catalytic addition of steam to ethene method 2: fermentation Which statement is incorrect?
May/June 2017
Which reaction is employed to produce ethanol?
May/June 2017
Ethanol is produced either by fermentation or by the catalytic addition of steam to ethene. Which statement is correct?
May/June 2017
Ethanol can be produced either by fermentation or by the catalytic addition of steam to ethene. What is one advantage of making ethanol by fermentation rather than by the catalytic addition of steam to ethene?
May/June 2017
Ethanol may be made by fermentation or by the catalytic addition of steam to ethene. Which row shows one advantage and one disadvantage of each process?
May/June 2017
Which reaction is employed to make ethanol?
May/June 2018
The equations for two key processes that are used to produce ethanol are shown. Process 1: $\text{C}_6\text{H}_{12}\text{O}_6 \rightarrow 2\text{C}_2\text{H}_5\text{OH} + 2\text{CO}_2$ Process 2: $\text{C}_2\text{H}_4 + \text{H}_2\text{O} \rightarrow \text{C}_2\text{H}_5\text{OH}$ Which statement is not correct?
May/June 2018
Sugars and ethene can each be converted into ethanol by different reactions. Which reaction type is used for each one?
May/June 2018
Ethanol may be made by fermentation or from ethene. State one disadvantage of making ethanol by fermentation.
May/June 2018
Two methods employed in the large-scale manufacture of ethanol are illustrated. process 1: A compound made up of carbon, hydrogen and oxygen is used to make ethanol. process 2: A compound made up of carbon and hydrogen only is used to make ethanol. Which statement is correct?
May/June 2018
Which row gives an advantage and a disadvantage of producing ethanol by fermentation?
May/June 2018
The structures for compounds A and B are displayed.
May/June 2018
This question concerns alcohols.
May/June 2018
Ethanol belongs to the homologous series of alcohols.
May/June 2018
What is the molecular structure of ethanol?
May/June 2019
Which of the following statements about ethanol are correct?
May/June 2019
Which of the following statements about ethanol are correct?
May/June 2019
Which of the statements about ethanol are correct?
May/June 2019
What chemical equation represents the process of fermentation?
May/June 2021
Which row gives the correct description of how ethanol is used?
May/June 2021
Which diagram illustrates the conversion of ethene into ethanol?
May/June 2021
What is one benefit of producing ethanol through fermentation?
May/June 2021
Which statement about ethanol is incorrect?
May/June 2021
Ethanol is reacted with acidified potassium manganate(VII). Which row gives the reaction type and the class of organic compound produced?
May/June 2021
State one advantage of using fermentation to produce ethanol rather than adding steam catalytically to ethene.
May/June 2021
What temperature range is employed in the production of ethanol by fermentation?
May/June 2022
Ethanol is produced on an industrial scale either by fermenting glucose or by adding steam to ethene using a catalyst. Which statement explains one advantage of fermentation when compared with catalytic addition?
May/June 2022
The reaction pathway presents five organic reactions, numbered 1 to 5. It shows: sugar $\rightarrow$ ethanol $\rightarrow$ alkene A $\rightarrow$ alkane B, ethanol $\rightarrow$ carbon dioxide + water, and ethanol $\rightarrow$ compound C.
May/June 2022
Which of the following statements about ethanol are correct?
May/June 2023
Ethanol can be produced by fermentation and by the catalytic addition of steam to ethene. Which row shows an advantage of each method?
May/June 2023
Ethanol is formed by: 1 the catalytic addition of steam to ethene 2 fermentation. Which statement is correct?
May/June 2023
In Fig. 7.1, place a circle around the alcohol functional group.
May/June 2023
What raw material is used to produce ethanol by fermentation?
May/June 2024
What drawback is there in producing ethanol by the catalytic addition of steam to ethene?
May/June 2024
State one advantage of making ethanol by fermentation rather than by adding steam to ethene?
May/June 2024
Ethanol may be produced through fermentation or by adding steam to ethene in the presence of a catalyst. Which statement picks out one advantage of using either of these methods?
May/June 2024
Glucose takes part in two processes.
May/June 2024
Which compound is produced when ethene reacts with steam?
May/June 2025
Ethanol is heated with acidified aqueous potassium manganate(VII). Which row identifies the reaction type of the ethanol and the colour change seen in the reaction mixture?
May/June 2025
In industry, ethanol is made either by fermentation or by reacting ethene with steam. Which row is correct?
May/June 2025
Ethanol may be produced either by the fermentation of aqueous glucose or by the catalytic addition of steam to ethene. What are two advantages of producing ethanol by the catalytic addition of steam to ethene instead of by the fermentation of aqueous glucose?
May/June 2025
Which substance belongs to the same homologous series as methanol?
Oct/Nov 2016
In which conical flask will ethanol form?
Oct/Nov 2016
Which equation shows the complete combustion of ethanol correctly?
Oct/Nov 2016
Substance Z shows these properties. 1 It burns in excess oxygen and produces carbon dioxide and water. 2 Air oxidises it to give a liquid with a vinegar smell. 3 It reacts with carboxylic acids to make esters. Which substance is Z?
Oct/Nov 2016
Ethanol is produced by adding steam to ethene using a catalyst, and also by fermentation. Which row gives one benefit and one drawback of using the catalytic addition of steam to ethene instead of fermentation?
Oct/Nov 2016
Substance Z has these properties. 1 In an excess supply of oxygen, it burns to produce carbon dioxide and water. 2 Air oxidises it to a liquid that has a vinegar-like smell. 3 It reacts with carboxylic acids to form esters. What is substance Z?
Oct/Nov 2016
Ethanol can be produced by catalytic addition of steam to ethene and by fermentation. Which row identifies one advantage and one disadvantage of using catalytic addition of steam to ethene instead of fermentation?
Oct/Nov 2016
Substance Z has these properties. 1. It combusts in excess oxygen to produce carbon dioxide and water. 2. Air oxidises it to give a liquid with a vinegar smell. 3. It reacts with carboxylic acids to produce esters. Identify substance Z.
Oct/Nov 2016
Ethanol is produced by catalytic addition of steam to ethene and also by fermentation. Which row gives one advantage and one disadvantage of using catalytic addition of steam to ethene instead of fermentation?
Oct/Nov 2016
Ethanol may be made either by fermentation or by reacting ethene with steam.
Oct/Nov 2016
The structure of compound R is displayed below. (Structural formula of a three-carbon chain with an $\text{OH}$ group attached to the terminal carbon.) What compound is R?
Oct/Nov 2017
Ethanol may be produced either from ethene or through the fermentation of glucose.
Oct/Nov 2017
Ethanol may be produced by: 1 fermentation 2 the reaction of steam with ethene. Which of these processes use a catalyst?
Oct/Nov 2018
Which molecule is not included in the alcohol homologous series?
Oct/Nov 2018
Ethanol may be produced by: 1 fermentation 2 a reaction between steam and ethene. Which of these processes requires a catalyst?
Oct/Nov 2018
Ethanol may be made by: 1 fermentation 2 a reaction of ethene with steam. Which of these processes uses a catalyst?
Oct/Nov 2018
Ethanol may be produced by: 1 fermentation 2 reaction between steam and ethene. Which of these processes uses a catalyst?
Oct/Nov 2018
Ethanol may be produced by: 1. fermentation 2. the reaction of steam with ethene. Which of these processes uses a catalyst?
Oct/Nov 2018
Ethanol is produced from ethene. What advantage does this process have?
Oct/Nov 2018
Ethanol may be produced by: 1 fermentation 2 reaction between steam and ethene. Which of these processes uses a catalyst?
Oct/Nov 2018
Sugar may be fermented to make ethanol. Several steps in the process used to make and purify ethanol are shown. 1 Place in a warm location. 2 Introduce yeast. 3 Fractionally distil the solution. 4 Dissolve the sugar in water. 5 Filter off the yeast. 6 Crush some sugar cane. Which sequence of these stages is correct?
Oct/Nov 2018
Ethanol may be produced either by fermentation or by hydration.
Oct/Nov 2018
Ethanol is produced both by the catalytic addition of steam to ethene and by fermentation. Which statement gives an advantage of fermentation when it is compared with the catalytic addition of steam to ethene?
Oct/Nov 2019
Ethanol is made by fermentation or by reacting ethene with steam. Which row is the correct one?
Oct/Nov 2019
Ethanol can be produced either by fermenting sugars or by adding steam catalytically to ethene. What are two benefits of producing ethanol by the catalytic addition of steam to ethene instead of by fermentation of sugars?
Oct/Nov 2019
This question concerns ethanol.
Oct/Nov 2019
Methanol, CH$_3$OH, belongs to the homologous series of alcohols.
Oct/Nov 2019
Which compound has a chemical name that finishes with -ol?
Oct/Nov 2020
The diagram illustrates how ethanol is made and shows some important chemistry of ethanol. Substance X $\xrightarrow{\text{fermentation}}$ ethanol $\xrightarrow{\text{process Y}}$ carbon dioxide + substance Z. Which substances are X, Y and Z?
Oct/Nov 2020
Which structure shows a molecule of ethanol?
Oct/Nov 2020
The flow diagram illustrates the preparation of ethanol and several important reactions of ethanol. substance X $\xrightarrow{\text{fermentation}}$ ethanol $\xrightarrow{\text{process Y}}$ carbon dioxide + substance Z Identify X, Y and Z.
Oct/Nov 2020
The flow diagram illustrates how ethanol is prepared and some key chemistry of ethanol. substance X $\xrightarrow{\text{fermentation}}$ ethanol $\xrightarrow{\text{process Y}}$ carbon dioxide $+$ substance Z Which substances are X, Y and Z?
Oct/Nov 2020
The flow diagram illustrates how ethanol is prepared and highlights some key chemistry of ethanol. What do X, Y and Z represent?
Oct/Nov 2020
Which structure shows a molecule of ethanol?
Oct/Nov 2020
The diagram outlines how ethanol is made and shows some key chemistry involving ethanol. substance X $\xrightarrow{\text{fermentation}}$ ethanol $\xrightarrow{\text{process Y}}$ carbon dioxide + substance Z Which substances are X, Y and Z?
Oct/Nov 2020
Propanol undergoes oxidation with acidified potassium manganate(VII) in much the same manner as ethanol. Which compound is formed when propanol is oxidised by acidified potassium manganate(VII)?
Oct/Nov 2020
The diagram below illustrates how ethanol is made and highlights some important chemistry involving ethanol. substance X $\xrightarrow{\text{fermentation}}$ ethanol $\xrightarrow{\text{process Y}}$ carbon dioxide + substance Z Which substances are X, Y and Z?
Oct/Nov 2020
Ethanol has the formula $\text{C}_2\text{H}_6\text{O}$.
Oct/Nov 2020