_ Lewis number, which is important in problems involving simultaneous – McqOptions

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1.	_ Lewis number, which is important in problems involving simultaneous heat and mass transfer, is the ratio of$?
A.	Mass diffusivity to momentum diffusivity
B.	Thermal diffusivity to mass diffusivity
C.	Momentum diffusivity to thermal diffusivity
D.	None of these
Answer» C. Momentum diffusivity to thermal diffusivity

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