Kerosene and petrol mixture can be best separated by

The correct answer is Fractional distillation.

Key Points

• Fractional distillation is the process of converting a liquid into a gas by heating it and then cooling it and condensing it back into the same liquid.
  • It is a process by which the components in a chemical mixture are separated into separate parts (called fractions) according to their different boiling points.
  • Fractional distillation is used to purify chemicals and separate mixtures to obtain their components.
  • It is similar to distillation except for the fact that a fractionating column is used to separate two or more volatile liquids.
  • It is the process used in refineries to obtain petrol, diesel, kerosene, etc. from crude oil.

Additional Information

• Sublimation is the transition of a substance directly from solid to gaseous state upon heating, without passing through the liquid state. Examples: Camphor, Iodine, Ammonium chloride, Naphthalene, etc.
• A separating funnel is a funnel used to separate insoluble liquids. Liquids that do not mix are called immiscible.
  • Two immiscible liquids, such as oil and water, can be separated using a separatory funnel.