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Worksheet: Fraction Distillation of Crude Oil

Q1:

In which of the following are crude oil fractions arranged in order of increasing viscosity?

  • ADiesel oil < gasoline < kerosene
  • BKerosene < diesel oil < gasoline
  • CKerosene < gasoline < diesel oil
  • DGasoline < kerosene < diesel oil
  • EGasoline < diesel oil < kerosene

Q2:

Why are crude oil fractions described as non-renewable resources?

  • A Crude oil use is not sustainable because it is no longer naturally produced.
  • B Crude oil fractions cannot be reused after combustion.
  • C Products made from crude oil fractions are non-recyclable.
  • D Crude oil use is not sustainable because its production is very slow.
  • E Products made from crude oil fractions are non-biodegradable.

Q3:

Which of the following is the molecular formula of a hydrocarbon likely to be found in LPG?

  • A C H 1 2 2 6
  • B C H 6 1 4
  • C C H 2 4 5 0
  • D C H 4 1 0
  • E C H 7 0 1 4 2

Q4:

In which application is kerosene used as the primary fuel?

  • A Cars
  • B Power stations
  • C Domestic heating
  • D Aircraft
  • E Trains

Q5:

Which of the following is the molecular formula of a hydrocarbon likely to be found in gasoline?

  • A C H 1 6 3 4
  • B C H 3 8
  • C C H 2 4 5 0
  • D C H 8 1 8
  • E C H 6 0 1 2 2

Q6:

Which of the following statements is true?

  • AFractional distillation involves the separation of compounds using a pressure gradient.
  • BFractional distillation involves a chemical reaction.
  • CAll fractions of crude oil are used as fuels.
  • DMost fractions of crude oil are liquids at room temperature.
  • EFractional distillation involves the separation of crude oil into pure compounds.

Q7:

Which variable physical property of crude oil fractions enables their separation by fractional distillation?

  • A Solubility
  • B Melting point
  • C Viscosity
  • D Boiling point
  • E Flammability

Q8:

Which of the following statements is false?

  • AHeavy fuel oils have higher viscosities than diesel oil.
  • BKerosene is distilled at a lower temperature than diesel oil.
  • CLPG contains shorter hydrocarbon molecules than diesel oil.
  • DLubricating oils ignite more easily than diesel oil.
  • EGasoline has a lower boiling point than diesel oil.

Q9:

Which of the following products are not commonly produced using petrochemicals?

  • A Medicines
  • B Paints
  • C Plastics
  • D Cooking oils
  • E Flavorings

Q10:

Crude oil fractions collected at lower temperatures during fractional distillation exhibit higher values for which of the following physical properties?

  • AMelting point
  • BIgnition temperature
  • CViscosity
  • DVolatility
  • EMolecular size

Q11:

At which of the following temperatures is crude oil heated at the base of a typical fractionating column?

  • A 1 5 0 C
  • B 5 0 C
  • C 2 5 0 C
  • D 3 5 0 C
  • E 4 5 0 C

Q12:

Which of the following is not an accurate description of crude oil?

  • A Fossil fuel
  • B Finite resource
  • C Nonsustainable
  • D Synthetic
  • E Energy rich

Q13:

Selected melting and boiling points of compounds extracted from three crude oil fractions are shown in the table.

Compound Melting Point ( C ) Boiling Point ( C )
X 1 3 0 40
Y 48 391
Z 1 4 0 1

In which fraction of crude oil would compound X be found?

  • A Bitumen
  • B LPG
  • C Diesel oil
  • D Gasoline
  • EHeavy fuel oil

In which fraction of crude oil would compound Y be found?

  • A Bitumen
  • B Diesel oil
  • C Gasoline
  • D LPG
  • E Heavy fuel oil

In which fraction of crude oil would compound Z be found?

  • A Bitumen
  • B Gasoline
  • C LPG
  • D Diesel oil
  • E Heavy fuel oil

Q14:

Which crude oil fraction is most useful as a fuel for large ships?

  • A Gasoline
  • B LPG
  • C Diesel oil
  • D Heavy fuel oil
  • E Kerosene