Mechanical Engineering Mcqs


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  • The mass transfer co-efficient for a solid sphere of radius ‘a’ dissolving in a large volume of quiescent liquid, in which „D’ is the diffusivity of solute, is _____________________?
  • The relative volatility of a binary mixture at constant temperature _________________ the total pressure?
  • _______________ equation applies to diffusivities in liquids?
  • When the gas to be dissolved in liquid is a/an ___________________ then normally co-current adsorber are used?
  • Experiments were conducted to determine the flux of a species A in a stagnant medium across a gas-liquid interface. The overall mass transfer co-efficient based on the liquid side for dilute systems for the above was estimated to be 4 × 10-3 kg mole/m2.s. The equilibrium data for the system is given as y = 2x. The flux across the interface (in kg mole/m2 .s) for bulk concentrations of A in gas phase and liquid phase as y = 0.4 and x = 0.01 respectively is _________________________?

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