Petroleum Refinery Engineering

Q1:

Which of the following has the maximum °API gravity of all?

A Diesel

B Kerosene

C Petrol

D Furnace oil

ANS:C - Petrol

Among the options listed, Petrol (Gasoline) typically has the maximum °API gravity of all. Here's why:

  • °API Gravity: API (American Petroleum Institute) gravity is a measure of how heavy or light a petroleum liquid is compared to water. Higher API gravity values indicate lighter and less dense liquids.
  • Petrol (Gasoline): Gasoline has a higher °API gravity compared to diesel, kerosene, and furnace oil. Gasoline is refined to be lighter and more volatile, with a higher proportion of lighter hydrocarbons, which results in a higher °API gravity.
  • Comparison with Other Options:
    • Diesel: Diesel has a lower °API gravity than gasoline because it contains heavier hydrocarbons.
    • Kerosene: Kerosene also has a lower °API gravity than gasoline. It is typically less volatile and lighter than diesel but heavier than gasoline.
    • Furnace Oil: Furnace oil (also known as fuel oil) generally has the lowest °API gravity among these options. It consists of heavier, more viscous hydrocarbons compared to gasoline, diesel, and kerosene.
Therefore, among diesel, kerosene, petrol (gasoline), and furnace oil, petrol (gasoline) has the maximum °API gravity due to its lighter and less dense composition relative to the others.



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