41. If mass diffusivity in a mixture is equal to the thermal diffusivity, then the Lewis number is
42. With increase in pressure, the relative volatility for a binary system
43. To increase the absorption factor, (where, G = gas flow rate, S = solvent flow rate)
44. __________ is used as an 'entrainer' for the separation of acetic acid-water mixture by distillation.
45. The value of Lewis number (Le = Sc/Pr) for air-water vapour system is around
46. Pressure drop through plate tower as compared to that through packed tower, for the same duty will be
47. For experimental determination of mass transfer co-efficient by wetted wall tower, the mass transfer area is
48. At minimum reflux ratio for a given separation
49. An azeotropic mixture is a __________ mixture.
50. The rough value of diffusion co-efficient of water vapor into air at 25°C may be about __________ cm2/sec.
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