The correct option is (a) True
Explanation: Le Goff number (Lf) is a dimensionless number that expresses the efficiency with which the energy dissipated in producing the fluid flow is used to transport material (and heat) to the catalytic surface. Higher Lf is indicates low pressure drops through the reactor, high flow rates and high conversions. Whereas low Lf value indicate a relatively high energetic and financial cost, in achieving contact between the catalytically active immobilised-enzyme surface and the substrate stream, and the consequent reduction in any external diffusion limitations. Hence the above statement is true.