Revision Quiz: Intro to Org Chem

Which statement about the members of a homologous series is not true?

• They have the same functional group.

• They undergo similar chemical reactions.

• They have the same molecular mass.

• There is a gradual change in their boiling points down the series.

Petroleum can be separated by fractional distillation because its constituents _____________.

• are immiscible

• have different densities

• are highly flammable

• have different boiling points

Which of the following fractions of petroleum has the highest boiling point?

• Diesel

• Kerosene

• Bitumen

• Petroleum gas

The table below shows the boiling point ranges of four fractions collected from the fractional distillation of petroleum. Which fraction contains the smallest molecules?

• A

• B

• C

• D

Which of the following are arranged in order of increasing boiling points?

• Kerosene, petrol, diesel, bitumen

• Bitumen, diesel, kerosene, petrol

• Petrol, diesel, kerosene, bitumen

• Petrol, kerosene, diesel, bitumen

At which outlet of the fractionating column below is the fuel used in gas cookers collected?

• A

• B

• C

• D

Which of these fractions has the most number of carbon atoms per molecule?

• Naphtha

• Petroleum gas

• Petrol

• Lubricating oil

The main constituent of natural gas is _____________.

• butane

• ethane

• methane

• propane

Some substances obtained from the distillation of petroleum are listed in order of decreasing boiling points.

bitumen, P, diesel, Q, naphtha, R, petroleum gas

Which row correctly identifies P, Q and R?

• A

• B

• C

• D

Which of the following statements is true?

• Petroleum can be separated by simple distillation.

• Natural gas is a renewable source of energy.

• Biodiesel is an alternative fuel to petroleum.

• Biogas is produced when organic matter decays in air.