Welcome to the Quiz!
This quiz contains 12 questions from a mix of 1 subtopics.
Crude oil is a complex mixture primarily made up of which type of hydrocarbon?
alkenes
alkanes
alkynes
alcohols
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What is the main technique used to separate crude oil into different fractions based on their boiling points?
fractional distillation
crystallisation
filtration
chromatography
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In the fractionating column, where are the temperatures highest?
at the bottom
at the top
in the middle
the temperature is constant throughout
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Which of the following statements about the properties of fractions is true?
boiling point decreases down the column
viscosity decreases down the column
boiling point increases down the column
flammability increases down the column
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What happens to the hydrocarbons that do not condense in the fractionating column?
they are recirculated back into the furnace
they remain as gases at the top
they are discarded as waste
they form a tar-like residue at the bottom
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Which fraction is used as jet fuel?
gas oil
kerosene
naphtha
petrol
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What is the primary use of the bitumen fraction?
petrochemical feedstock
lubricants
roofing and roads
fuel for vehicles
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Which of the following fractions has the highest viscosity?
kerosene
petrol
gases
bitumen
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Which of the following fractions is used as fuel for ships and power stations?
mineral oil
fuel oil
naphtha
petrol
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What happens to the condensed hydrocarbon liquids that accumulate on each tray in the fractionating column?
they are mixed back together
they are recirculated back into the furnace
they are discarded as waste
they are drawn off as fractions
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What is the name of the tall column used in fractional distillation to separate vaporised components based on their ability to condense at different temperatures?
column
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Describe the key steps involved in the fractional distillation of crude oil.
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