Fractional distillation

What is the main component of crude oil?

• Carbon dioxide

• Hydrocarbons

• Oxygen

• Nitrogen

What is the purpose of fractional distillation?

• To increase the boiling point of hydrocarbons

• To cool down crude oil

• To separate hydrocarbons based on properties

• To mix hydrocarbons

Which fraction of crude oil is mainly used as bottled gas for cooking and heating?

• Petrol

• Kerosene

• Diesel

• Liquefied petroleum gases (LPG)

What is the main use of kerosene?

• Fuel for car engines

• Fuel for jet engines in aircraft

• Used in lamps

• Fuel for ships

Propane is a hydrocarbon with THREE carbon chain. At which part of the fractional distillation column does it condense?

• The top

• The middle

• The bottom

At what temperature is crude oil heated in the fractional distillation process?

• Over 400ºC

• 200ºC

• 100ºC

• 300ºC

What happens to hydrocarbons in the crude oil mixture when heated to over 400ºC?

• They evaporate

• They turn into a gas

• They solidify

• They remain unchanged

Where do longer chain hydrocarbons condense in the fractionating column?

• Towards the top

• In the middle

• Towards the bottom

• At the top

What is the boiling point of nitrogen?

• -196ºC

• -100ºC

• -183ºC

• -200ºC

What is the main use of petrol (gasoline)?

• Fuel for car engines

• Fuel for jet engines in aircraft

• Used in lamps

• Fuel for ships