Mass Transfer Which of the following gas-liquid contacting devices incurs the least pressure drop for a particular duty? Grid tray tower Perforated tray tower Bubble cap tower Wetted wall tower Grid tray tower Perforated tray tower Bubble cap tower Wetted wall tower ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Tower diameter may be decreased by Increasing the vapour flow rate Use of increased tray spacing Using higher reflux ratio Increasing the liquid flow rate Increasing the vapour flow rate Use of increased tray spacing Using higher reflux ratio Increasing the liquid flow rate ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer For a distillation column operating at minimum reflux, the Concentration of liquid and vapour leaving a plate will be same Number of plates required will be maximum None of these Reflux ratio will be maximum Concentration of liquid and vapour leaving a plate will be same Number of plates required will be maximum None of these Reflux ratio will be maximum ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Make up water is supplied during cooling tower operation to compensate for water losses due to Evaporation Entrainment Blowdown All of these Evaporation Entrainment Blowdown All of these ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer As the reflux ratio in a distillation coloumn is increased from the minimum, the Total cost first decreases and then increases Slope of the operating line in stripping section decreases Number of plates decreases very slowly first and then more and more rapidly Liquid flow increases while the vapor flow decreases for a system Total cost first decreases and then increases Slope of the operating line in stripping section decreases Number of plates decreases very slowly first and then more and more rapidly Liquid flow increases while the vapor flow decreases for a system ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer The main reason for dividing a tall packed tower into series of small towers is to Minimise the overall pressure drop Avoid flooding Reduce liquid hold up Avoid channeling Minimise the overall pressure drop Avoid flooding Reduce liquid hold up Avoid channeling ANSWER DOWNLOAD EXAMIANS APP
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