Oil Refining and its Products (Leaving Cert Chemistry): Quizzes
📚Quizzes
Practise the questions
14 questions from this quiz
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Practise the questions
14 questions from this quiz
What property is used to separate crude oil components during fractional distillation?
What property is used to separate crude oil components during fractional distillation?
Boiling points
What is kerosene primarily used for?
What is kerosene primarily used for?
Jet fuel and heating fuel
What product is made from the residue fraction of crude oil?
What product is made from the residue fraction of crude oil?
Bitumen
What is the main component of natural gas?
What is the main component of natural gas?
Methane
What two gases primarily make up LPG?
What two gases primarily make up LPG?
Propane and butane
Why are mercaptans added to natural gas and LPG?
Why are mercaptans added to natural gas and LPG?
To give them a strong odor for leak detection
What does auto-ignition cause in an engine?
What does auto-ignition cause in an engine?
Knocking
What does the octane number measure?
What does the octane number measure?
Resistance to knocking
What octane number is assigned to iso-octane (2,2,4-trimethylpentane)?
What octane number is assigned to iso-octane (2,2,4-trimethylpentane)?
100
What octane number is assigned to heptane?
What octane number is assigned to heptane?
0
How does branching affect the octane number of hydrocarbons?
How does branching affect the octane number of hydrocarbons?
Highly branched have higher octane numbers
How does carbon chain length affect octane number?
How does carbon chain length affect octane number?
Shorter chains have higher octane numbers
What does isomerisation do to improve octane number?
What does isomerisation do to improve octane number?
Converts straight-chain to branched alkanes
Why was tetraethyl lead phased out from petrol?
Why was tetraethyl lead phased out from petrol?
Health and environmental concerns