Mass Transfer The binary diffusivity in gases at atmospheric conditions is about 10-9 cm/sec 10-1 cm²/sec 10-4 cm²/seC₂ 10-3 sec/cm 10-9 cm/sec 10-1 cm²/sec 10-4 cm²/seC₂ 10-3 sec/cm ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer On moving the feed line (q-line) from saturated liquid feed (vertical position) to saturated vapor feed (horizontal feed), if the slope of both the operating lines are to be increased, then it will result in Increased reflux ratio Increased reboiler load None of these Greater degree of separation with a fixed number of trays Increased reflux ratio Increased reboiler load None of these Greater degree of separation with a fixed number of trays ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Plate efficiency in a distillation column is reduced due to the __________ of liquid. Weeping & dumping Entrainment All of these Foaming Weeping & dumping Entrainment All of these Foaming ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Penetration theory states that the mass transfer co-coefficient is equal to (where, De is diffusivity and 't' is time) (De.t)1/2 (4De/t) (De/t)1/2 (4De/πt)1/2 (De.t)1/2 (4De/t) (De/t)1/2 (4De/πt)1/2 ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Humidity chart is useful for the solution of problems concerning condensation, vaporisation and air conditioning. At a given dry bulb temperature, value of humidity obtained from the humidity chart directly, is in terms of __________ humidity. None of these Percentage Molal Relative None of these Percentage Molal Relative ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer During the constant rate period of drying of a solid, Increasing the air temperature decreases the drying rate None of these Surface evaporation of unbound moisture occurs Increased air humidity decreases the rate of drying Increasing the air temperature decreases the drying rate None of these Surface evaporation of unbound moisture occurs Increased air humidity decreases the rate of drying ANSWER DOWNLOAD EXAMIANS APP
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