Mass Transfer In the constant rate period of the rate of drying curve for batch drying, Surface evaporation of unbound moisture occurs None of these Rate of drying decreases abruptly Cracks develop on the surface of the solid Surface evaporation of unbound moisture occurs None of these Rate of drying decreases abruptly Cracks develop on the surface of the solid ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer __________ is used as an 'entrainer' for the separation of acetic acid-water mixture by distillation. Hexane Benzol Furfural Butyl acetate Hexane Benzol Furfural Butyl acetate ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer A 25 cm x 25 cm x 1 cm flat sheet weighing 1.2 kg initially was dried from both sides under constant drying rate conditions. It took 1500 seconds for the weight of the sheet to reduce to 1.05 kg. Another 1m x 1m x 1cm flat sheet of the same material is to be dried from one side only.Under the same constant drying rate conditions, the time required for drying (in seconds) from its initial weight of 19.2 kg to 17.6 kg is 2000 1500 1000 2500 2000 1500 1000 2500 ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer A natural draft cooling tower is filled with wooden grids, which covers about __________ percent of the tower height. 30-40 70-80 44119 90-100 30-40 70-80 44119 90-100 ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer The surface renewal frequency in Danckwerts model of mass transfer is given by (KL: mass transfer co-efficient) KL²/DA KL².DA √(KL².DA) KL/DA² KL²/DA KL².DA √(KL².DA) KL/DA² ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer In case of non-ideal gases and liquids, the molal diffusivity Varies inversely as the pressure Varies directly as the pressure Is equal to the volumetric diffusivity Is independent of pressure Varies inversely as the pressure Varies directly as the pressure Is equal to the volumetric diffusivity Is independent of pressure ANSWER DOWNLOAD EXAMIANS APP