Which of the following processes consumes hydrogen?

Solution (By Examveda Team)

Fluid Catalytic Cracking (FCC) is a catalytic conversion process used to break heavy hydrocarbons into lighter fractions like gasoline and olefins. It operates without external hydrogen and may even produce a small amount of hydrogen as a byproduct.

Visbreaking is a mild thermal cracking process aimed at reducing the viscosity of heavy residues. It relies solely on heat and does not involve or consume hydrogen.

Propane Deasphalting is a solvent extraction process where propane separates asphalt from deasphalted oil based on solubility differences. Since it is not a chemical reaction process, hydrogen is neither required nor consumed.

Processes that consume hydrogen in refineries are typically hydroprocessing units such as hydrotreating and hydrocracking. Since none of the given options fall under this category, the correct answer is none of these.