Q1: Wetted wall tower experiment determines the

ANS:C - mass transfer co-efficient.

The mass transfer coefficient is a crucial parameter in the analysis of mass transfer processes, especially in systems where one or more components move from one phase to another. It represents the effectiveness of the mass transfer process and quantifies the rate at which mass is transferred per unit area per unit concentration difference. In a typical mass transfer scenario, such as gas absorption into a liquid or vaporization of a liquid into a gas, the mass transfer coefficient reflects how efficiently the mass is transferred between the two phases. Higher values of the mass transfer coefficient indicate more rapid mass transfer. The mass transfer coefficient depends on various factors including the properties of the system (such as fluid viscosity, density, and diffusivity), the geometry of the system, the specific mass transfer mechanism involved (such as diffusion or convection), and the characteristics of the interface between the two phases. Experimental techniques, like the wetted wall tower experiment, are often employed to determine the mass transfer coefficient under specific conditions. These experiments involve controlled setups where the transfer of mass between phases can be accurately measured, allowing for the calculation of the mass transfer coefficient. Overall, the mass transfer coefficient plays a fundamental role in the design and optimization of various industrial processes involving mass transfer, including distillation, absorption, extraction, and drying operations.