WorksheetsIGCSE fractional distillation
Total questions: 10
Worksheet time: 12mins
Crude oil is know as a fossil fuel because
It is found underground
It takes millions of years to form
It will run out one day
It is made from dead animals and plants
Crude oil is known as a finite resource because
It is found underground
It takes millions of years to form
It will run out one day
it is made from dead plants and animals
Distillation is a technique which separates substances based on which physical property?
density
viscosity
boiling point
melting point
Which statement is untrue
Crude oil contains a mixture of hydrocarbons
Crude oil is made from alkenes
Alkanes are saturated
hydrocarbons only contain the elements hydrogen and carbon
A fraction is
a group of alkanes with similar boiling points
a group of alkanes with similar chemical properties
a group of alkanes with the same general formula
a group of different homologous series
Which of these is untrue about a fractional distillation column
The column is hottest at the top and coolest at the bottom
As the size of the molecules increases their boiling point increases
As the size of the molecules increases the viscosity increases
The column is hottest at the bottom and coolest at the top
The boiling of alkanes increases as they bigger because
the strength of the metallic bonds increases
the strength of the ionic bonds increases
the strength of the covalent bonds increases
the strength of the intermolecular forces increases
The fraction kerosine is used for
Cars
chemical industry
lorries
planes
the fraction naptha is used for
cars
the chemical industry
lorries
planes
which of these is untrue for alkanes
They have the general formula CnH2n+2
They only contain carbon-carbon single bonds
They are very flammable
They are hydrocarbons
