Cambridge IGCSE Chemistry practice

Paper 3 structured question: Fuels

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Paper

Marks

Topic

Fuels

Exam-style question

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Paper 3Theory (Core)6 marks

The properties of petroleum fractions are crucial for their applications in fuels and other products.

Description

Describe how the properties of petroleum fractions change as you move from the bottom to the top of a fractionating column.

a
Describe the changes in properties of petroleum fractions from the bottom to the top of the fractionating column.
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Aim for approximately 6 distinct marking points.
[6]

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Paper 3Theory (Core)1 marks

Description

As crude oil is heated and passed through a fractionating column, various fractions are collected at different heights.

a
State the trend in boiling points of petroleum fractions from the bottom to the top of the column.
Your answer
Aim for approximately 1 distinct marking point.
[1]