Mineral oil is derived from which process?

• A. Fermenting crude oil
• B. Distilling water
• C. Refining crude oil
• D. Synthesizing gas

Answer: (C)

Mineral oil comes from petroleum through refining. Crude oil is a mixture of many hydrocarbons, and refining uses steps like distillation and further purification to separate and clean specific fractions. The heavier fractions are treated to become lubricating oils, which we know as mineral oil. So the process that yields mineral oil is refining crude oil.

The other ideas don’t fit. Fermenting crude oil would imply a biological process that doesn’t produce mineral oil. Distilling water separates water from impurities but doesn’t create hydrocarbons. Synthesizing gas makes gaseous products, not the liquid mineral oil.