Fractional Distillation of Crude Oil Quiz

What is crude oil?

• Refined oil

• Unprocessed oil

• Synthetic oil

• Processed oil

What is the main purpose of fractional distillation?

• To separate crude oil into useful fractions

• To convert crude oil into plastic

• To refine crude oil

• To extract natural gas from crude oil

Which part of the fractionating column has the highest temperature?

• Top

• Bottom

• Middle

• It is uniform throughout

What is the relationship between chain length and boiling point of a molecule?

• Shorter chain length, lower boiling point

• Longer chain length, higher boiling point

• Longer chain length, lower boiling point

• Shorter chain length, higher boiling point

What happens to the long chain molecules with high boiling points in the fractionating column?

• They rise up the column and condense at the top

• They evaporate into a gas

• They are separated into individual carbon atoms

• They condense back into a liquid and are collected at the bottom of the column

What is the purpose of the bubble caps in the fractionating column?

• To prevent the condensation of the vapour

• To separate the different fractions of hydrocarbons

• To slow down the rate of the rising vapour

• To increase the temperature of the rising vapour

Where are small chain molecules with low boiling points collected in the fractionating column?

• At the bottom of the column

• In the middle of the column

• At the top of the column

• At the top of the column

What type of intermolecular forces do longer chain molecules have compared to shorter chain molecules?

• Weaker

• Stronger

• The same

• Unpredictable

What is petrol primarily used for?

• To lay roads and on roofs

• In the manufacture of chemicals

• As aircraft fuel

• As a fuel for cars

What is kerosene commonly used as?

• Fuel for cars

• Aircraft fuel

• Manufacturing chemicals

• Laying roads and on roofs