Fuels

Which substance would not be suitable for use as a fuel when heating water in a boiler?

Feb/March 2016

Which pollutant gas is formed when octane, $\text{C}_8\text{H}_{18}$, undergoes incomplete combustion?

Feb/March 2016

What is fraction X called?

Feb/March 2016

Which substance would not be suitable as a fuel for heating water in a boiler?

Feb/March 2016

What is fraction X called?

Feb/March 2016

The table gives the composition of four different kinds of petroleum. Which type of petroleum is most suitable for use in the motor vehicle industry?

Feb/March 2017

The table presents the make-up of four different petroleum types. Which petroleum type is most suitable for the motor vehicle industry?

Feb/March 2017

Statement 1: Hydrogen serves as a fuel. Statement 2: As hydrogen burns in air and forms water, heat energy is released. Which statement is correct?

Feb/March 2018

Which substance is not used as fuel?

Feb/March 2018

Petroleum is a valuable natural resource. The diagram illustrates how petroleum may be separated into useful substances. The diagram labels the fractions in order from the top down as follows: refinery gas, gasoline fraction, A, kerosene fraction, diesel oil, fuel oil fraction, lubricating oil fraction, with petroleum entering near the bottom and B leaving at the bottom.

Feb/March 2020

Fuels give out heat energy as they burn. Which substances are used as fuels?

Feb/March 2021

X is formed when petrol undergoes complete combustion in air. What is X?

Feb/March 2021

Which fraction obtained from petroleum serves as jet fuel?

Feb/March 2021

Petroleum is separated by fractional distillation at an oil refinery. The table lists some fractions and their uses. 1 gasoline - ship fuel 2 refinery gas - for lubrication 3 naphtha - used to make chemicals 4 kerosene - as jet fuel Which rows match a correct use with the fraction named?

Feb/March 2023

Methane, $\text{CH}_4$, undergoes combustion in air, producing carbon dioxide and water. What balanced equation represents this reaction?

Feb/March 2023

Which gas makes up the largest proportion of natural gas?

Feb/March 2025

A sample of petroleum is split into three fractions, X, Y and Z, by fractional distillation. A few properties of X, Y and Z are shown. Which fraction has the longest carbon chain, and which fraction is the most volatile?

Feb/March 2025

The diagram illustrates how petroleum is separated into fractions. What might X, Y and Z stand for?

May/June 2016

The diagram illustrates how petroleum is separated into fractions. What might X, Y and Z stand for?

May/June 2016

The diagram illustrates petroleum being separated into fractions. What might X, Y and Z represent?

May/June 2016

The diagram illustrates the separation of petroleum into fractions. What might X, Y and Z stand for?

May/June 2016

Petroleum consists of a mixture of hydrocarbons.

May/June 2016

The table lists some properties of four fuels. Which fuel is gaseous at room temperature and forms two products when it burns in an abundant supply of air?

May/June 2017

Which petroleum fraction is paired with the wrong use?

May/June 2017

Cracking is a significant process in the petroleum industry. The products formed by cracking include .....1..... and .....2..... of .....3..... relative molecular mass than the .....4..... that were cracked. Which words complete gaps 1, 2, 3 and 4?

May/June 2017

Which of these statements about fuels is correct?

May/June 2017

Fuel oil, gasoline, kerosene and naphtha are four fractions produced by the fractional distillation of petroleum. What is the sequence of the boiling points of these fractions?

May/June 2017

The table lists some properties of four fuels. Which fuel is a gas at room temperature and produces two products when it burns in an excess of air?

May/June 2017

Which petroleum fraction is paired with an incorrect use?

May/June 2017

Which of these statements about fuels is correct?

May/June 2017

Thermal energy is released when hydrocarbons react with air. Which equations show this idea?

May/June 2017

Which gas serves as a fuel?

May/June 2018

Which of the following is not the correct use of the named fraction?

May/June 2018

Which statement concerning the combustion of fuels is correct?

May/June 2018

Which option is not the proper use of the named fraction?

May/June 2018

Which of the following is not a correct use of the fraction named?

May/June 2018

Which of the following is not a proper use of the fraction named?

May/June 2018

Which of the following is not an appropriate use of the fraction named?

May/June 2018

Which statement is not the correct use of the named fraction?

May/June 2018

The heat given out when four different fuels are burned is compared with the apparatus shown. A known mass of each fuel is burned, and the rise in the water temperature is measured.

May/June 2018

The table gives the percentage by volume for each gas present in the exhaust from a petrol engine and from a diesel engine.

May/June 2018

Which fuel may be gasoline?

May/June 2019

Which fuel might be gasoline?

May/June 2019

Which fuel might be gasoline?

May/June 2019

Which fuel might be gasoline?

May/June 2019

Which fuel might be gasoline?

May/June 2019

Which of the fuels could be gasoline?

May/June 2019

When propane reacts with oxygen in air, carbon dioxide and water are produced. What is the chemical equation for this reaction?

May/June 2019

Which of the following statements about petroleum fractions is correct?

May/June 2021

Which substance is not employed as a fuel?

May/June 2021

Which gas is the principal component of natural gas?

May/June 2021

Which substance forms the largest part of natural gas?

May/June 2021

Which fuels give off carbon dioxide when they are burnt?

May/June 2022

Petroleum is divided into useful fractions by fractional distillation. Which fraction is used as fuel for jet aeroplanes?

May/June 2022

Which equation shows the complete combustion of methane?

May/June 2022

The products made when substance J is burned are led through the apparatus illustrated. What is substance J?

May/June 2022

Naphtha is one of the fractions separated by the fractional distillation of petroleum. What is a main use of the naphtha fraction?

May/June 2022

Which one of the following statements about fuels is correct?

May/June 2022

State which compound, C, D, E or F, causes aqueous bromine to decolourise.

May/June 2022

The diagrams show the structures of four organic compounds, C, D, E and F.

May/June 2022

The fractional distillation of petroleum is illustrated. Which fraction is composed of hydrocarbons with the longest chain length?

May/June 2023

5 g of four different fuels are ignited and positioned beneath a beaker holding $50\text{ cm}^3$ of water. The water temperature is measured at the beginning and again after five minutes. Which fuel gives out the most energy?

May/June 2023

Kerosene is one of the fractions obtained from petroleum. What is kerosene used for in practice?

May/June 2023

The fractional distillation of petroleum is illustrated. Which fraction has hydrocarbons with the greatest chain length?

May/June 2023

Which row names the petroleum fractions used to cut down friction between metal parts in engines and to act as a fuel in cars?

May/June 2024

The following four fuels are given: 1 ethanol; 2 coal; 3 hydrogen; 4 natural gas. Which of these fuels are fossil fuels?

May/June 2024

What substance is formed during the incomplete combustion of methane?

May/June 2025

Which sequence gives the fractions separated from petroleum by fractional distillation, arranged in order of rising boiling point?

May/June 2025

Which fuel might be gasoline?

May/June 2025

Petroleum can be split into useful fractions by fractional distillation. Which row identifies a correct use of the named fraction?

May/June 2025

This question concerns organic chemistry.

May/June 2025

This question concerns organic chemistry.

May/June 2025

This question concerns organic chemistry.

May/June 2025

Petroleum is a significant fossil fuel. Which row gives the correct description of petroleum?

Oct/Nov 2016

Which substance is not used as a source of fuel?

Oct/Nov 2016

Petroleum is separated into fractions. Which statement is incorrect?

Oct/Nov 2016

The equation shows the fermentation of $X$. $X \xrightarrow{\text{yeast}} \text{ethanol} + \text{carbon dioxide}$ What substance is $X$?

Oct/Nov 2016

What is invariably produced when a fuel is burned?

Oct/Nov 2016

Which sequence shows the fractions produced by distilling petroleum, arranged in order of rising boiling point?

Oct/Nov 2016

Ethanol serves as a biofuel. Which equation represents the complete combustion of ethanol?

Oct/Nov 2016

Petroleum is divided into fractions. Which statement is incorrect?

Oct/Nov 2016

Which sequence gives the fractions produced by the distillation of petroleum, arranged in order of rising boiling point?

Oct/Nov 2016

The equation represents the complete combustion of propane. $\text{C}_3\text{H}_8(g) + 5\text{O}_2(g) \rightarrow 3\text{CO}_2(g) + 4\text{H}_2\text{O}(l)$ Which of the following statements is correct?

Oct/Nov 2016

Petroleum is made up of a mixture of hydrocarbons. Fractional distillation is used to split it into useful fractions. The fractionating column shown can be used for this separation.

Oct/Nov 2016

A number of the fractions produced by the fractional distillation of petroleum are burned as vehicle fuels. Which two fractions are used as fuels for vehicles?

Oct/Nov 2017

The combustion of fossil fuels gives out heat energy. Which substance is not a fossil fuel?

Oct/Nov 2017

What substance is formed during the incomplete combustion of methane?

Oct/Nov 2017

Fuel oil and naphtha are two fractions separated from petroleum. What are the main uses of these fractions?

Oct/Nov 2017

Which substances are produced by the complete combustion of ethanol?

Oct/Nov 2017

Some fractions separated by the fractional distillation of petroleum are burned as fuels to power vehicles. Which two fractions are burned as fuels to power vehicles?

Oct/Nov 2017

Fuel oil and naphtha are two fractions separated from petroleum. What are the main uses of these fractions?

Oct/Nov 2017

The diagram depicts a fractionating column for the fractional distillation of petroleum, with labels for refinery gas at the top, gasoline fraction, F, kerosene fraction and the lower fractions.

Oct/Nov 2017

Which substance releases heat energy without needing oxygen?

Oct/Nov 2018

Which substance does not require oxygen to release heat energy?

Oct/Nov 2018

Which substance does not use oxygen to release heat energy?

Oct/Nov 2018

Which equation shows the incomplete combustion of propane, $\text{C}_3\text{H}_8$?

Oct/Nov 2018

A fractionating column is used to separate the hydrocarbon fractions in petroleum by fractional distillation. Which row describes the properties of the fractions that condense near the top of the fractionating column?

Oct/Nov 2019

Fractional distillation is used to separate petroleum. Which statement about the fractions formed is correct?

Oct/Nov 2019

Several fractions separated from petroleum are shown. Which of the rows are correct?

Oct/Nov 2019

A list of several fractions obtained from petroleum is shown. Which rows are correct?

Oct/Nov 2019