Do you know what cracking is?
Topic Overview - Hydrocarbons and Cracking
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Arrange the following steps in the correct order to describe how crude oil is separated into more useful fractions.
- As the vapours rise they cool and different hydrocarbons condense due to their difference in boiling points.
- Fuel oil leaves second, followed by diesel oil.
- Kerosene condenses and is removed.
- When hydrocarbons condense they drip into a tray and are removed in pipes.
- At the top of the column, some gases leave as they have still not condensed.
- Petrol condenses and is removed.
- Bitumen leaves first since it has the lowest boiling point and the column is hotter at the bottom.
- Crude oil is heated until it evaporates and then is pumped into the bottom of a fractionating column.
Complete the sentence: Methane is a fossil fuel found in natural gas.
Finish the sentence: Petrol, kerosene and diesel oil are fossil fuels obtained from crude oil.
Hydrocarbons are compounds that contain which two elements only?CorrectIncorrect
Hydrocarbons are separated in fractionating columns into fractions with similar properties. Fractions which are not very viscous and so flow easily also ignite easily. Which statement explains how viscosity differs within the column?CorrectIncorrect
Hydrocarbons with the longest carbon chains have the highest boiling points. Where are the fractions with the smallest carbon chains removed in a fractionating column?CorrectIncorrect
Drag and drop to match the hydrocarbon type with the correct use
- Petrol and diesel
- Fuel oil
- Hydrocarbon gases
- Road and roof surfacing
- Cooking and heating
Which of the following statements are correct about crude oil?CorrectIncorrect
Which process do we use to separate crude oil into more useful and simpler mixtures?CorrectIncorrect
Why is bitumen not a good fuel?CorrectIncorrect
Alkanes all have the same general formula. What is that formula?CorrectIncorrect
Alkanes and alkenes are both part of a series, what is the name we give to the series?CorrectIncorrect
Crude oil separated by fractional distillation creates unequal volumes of each fraction e.g. fuel oil. These unequal volumes also do not match the demand for each fraction. What process is carried out to balance out the supply with demand?CorrectIncorrect
Select the accurate statements about alkanes.CorrectIncorrect
The following equations show cracking of a long hydrocarbon into a shorter alkane and an alkene. Which equation is correct?CorrectIncorrect
What is the formula that represents how much each alkane differs from each neighbouring compound?CorrectIncorrect
Which descriptions are accurate about saturated and unsaturated hydrocarbons?CorrectIncorrect
What is the purpose of cracking?CorrectIncorrect
Which of the following is a difference between alkanes and alkenes?CorrectIncorrect
How do sulfur compounds get into hydrocarbon fuels like petrol and diesel?CorrectIncorrect
What is a common issue with soot (carbon) produced during combustion?CorrectIncorrect
What toxic effects does carbon monoxide have on the body?CorrectIncorrect
Which description best matches complete combustion?CorrectIncorrect
Which gas that leads to acid rain is produced when hydrocarbons containing sulfur are burned?CorrectIncorrect
Which of the following are causes of acid rain?CorrectIncorrect
Which of the following are negative effects of acid rain?CorrectIncorrect
Why does burning of fuel inside an internal combustion engine lead to the production of oxides of nitrogen?CorrectIncorrect
Why is carbon and carbon monoxide produced during incomplete combustion?CorrectIncorrect