Question

Choose the correct statement regarding thermal cracking.

• A. Increased residence time results in the decreased severity of cracking
• B. Greater depth of cracking gives lower octane number gasoline
• C. At low pressure, the yield of lighter hydrocarbons are more
• D. Moderate changes in operating temperature does not change the depth of cracking

Answer 1

The correct option is B Greater depth of cracking gives lower octane number gasoline

Thermal cracking is a process of refining or extraction of crude oil. In this process heat and pressure is used to break, rearrange or combine hydrocarbon molecules. In this process more the depth of cracking, we get lower octane number of gasoline.