GATE Chemical 2019 | Question: 8

Question

Prandtl number signifies the ratio of

• A. $\frac{Momentum \: Diffusivity}{Thermal \: Diffusivity}$
• B. $\frac{Mass \: Diffusivity}{Thermal \: Diffusivity}$
• C. $\frac{Thermal \: Diffusivity}{Momentum \: Diffusivity}$
• D. $\frac{Thermal \: Diffusivity}{Mass \: Diffusivity}$