Question

In fluid catalytic cracking(FCC) process, how does the heavy hydrocarbon crack into lower molecular compounds?

(a) On contact with catalyst

(b) By heating at high temperature

(c) By pyrolysis process

(d) None of the mentioned

This question was posed to me during an interview for a job.

Question is taken from Fluid Catalytic Cracking topic in portion Industrial Applications of Fluidized Beds of Fluidization Engineering

Answer 1

The correct choice is (a) On contact with catalyst

To elaborate: Heavy hydrocarbons crack when they come in contact with catalyst.