Mass Transfer Chemisorption (chemical adsorption) is Same as "Van der Waals" adsorption Characterised by adsorption of heat A reversible phenomenon An irreversible phenomenon Same as "Van der Waals" adsorption Characterised by adsorption of heat A reversible phenomenon An irreversible phenomenon ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer During the constant rate period of drying of a solid, 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 Increasing the air temperature decreases the drying rate None of these Surface evaporation of unbound moisture occurs ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer When adsorption hysteresis is observed, the desorption equilibrium pressure is __________ that obtained by adsorption. Always lower than Same as Dependent on the system; can be either lower or higher than Always higher than Always lower than Same as Dependent on the system; can be either lower or higher than Always higher than ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer The rough value of diffusion co-efficient of water vapor into air at 25°C may be about __________ cm²/sec. 2.5 0.0025 0.25 1.25 2.5 0.0025 0.25 1.25 ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Flash distillation is suitable for separating the constituents of a binary system, which Have very wide boiling points Have very close boiling points Form constant boiling azeotrope Form minimum boiling azeotrope Have very wide boiling points Have very close boiling points Form constant boiling azeotrope Form minimum boiling azeotrope ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer To remove all the moisture from a wet solid it requires exposure to __________ air. Perfectly dry None of these High temperature Highly humid Perfectly dry None of these High temperature Highly humid ANSWER DOWNLOAD EXAMIANS APP
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