Which process is an air-fluidized technique used to coat tablets and then granulate and dry them?

• A. Dry Granulation
• B. Wet Granulation
• C. Fluid Bed Granulation
• D. NOTA

Answer: (C)

The technique being tested relies on fluidization to coat and then form and dry granules in one continuous process. In a fluid bed, an upward stream of heated air keeps the powder bed suspended, so particles behave like a fluid. A coating or binder is sprayed into this bed; as the droplets contact the moving particles, they coat them or bind them together, while the hot air rapidly dries the coating. This setup lets you first coat tablets and then granulate and dry them in the same equipment, achieving uniform coating and consistent granule size. Dry granulation doesn’t use liquids or fluidization, since it compounds powders through compaction or milling. Wet granulation uses a liquid binder but typically in a mixer or granulator without the air-fluidized bed that enables rapid drying and coating in one step. So the air-fluidized, coating-and-drying sequence described is characteristic of fluid bed granulation.