What is the alternative name for the refining device described as a fractionating column, also known as pipestill?

• A. Fractionation or fractionating column (also pipestill)
• B. Distillation column
• C. Reformer
• D. Cracker

Answer: (A)

This device is a column used for fractional distillation, separating components by boiling point through multiple equilibrium stages. An alternative name for it is fractionation column (or fractionating column), also pipestill. The terms fractionation/fractionating column describe the same hardware and process, and pipestill is a historical nickname for the same vertical column. That’s why this option is the best fit. The other terms refer to broader ideas or different equipment—distillation column is a broader category, while reformers and crackers are different processing units altogether.