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Lesson: Fractional Distillation of Crude Oil

Worksheet • 14 Questions

Q1:

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

  • AGasoline < kerosene < diesel oil
  • BGasoline < diesel oil < kerosene
  • CKerosene < diesel oil < gasoline
  • DKerosene < gasoline < diesel oil
  • EDiesel oil < gasoline < kerosene

Q2:

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

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

Q3:

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

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

Q4:

In which application is kerosene used as the primary fuel?

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

Q5:

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

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

Q6:

Which of the following statements is true?

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

Q7:

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

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

Q8:

Which of the following statements is false?

  • ALubricating oils ignite more easily than diesel oil.
  • BGasoline has a lower boiling point than diesel oil.
  • CKerosene is distilled at a lower temperature than diesel oil.
  • DLPG contains shorter hydrocarbon molecules than diesel oil.
  • EHeavy fuel oils have higher viscosities than diesel oil.

Q9:

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

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

Q10:

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

  • AVolatility
  • BMolecular size
  • CIgnition temperature
  • DViscosity
  • EMelting point

Q11:

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

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

Q12:

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

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

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 Gasoline
  • BHeavy fuel oil
  • C LPG
  • D Diesel oil
  • E Bitumen

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

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

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

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

Q14:

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

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