Mass Transfer A mixture of 10% C₆H₆ vapour in air at 25°C and 750 mm Hg has a dew point of 20°C. Its dew point at 30°C and 700 mm Hg will be around __________ °C. 18.7 20 21.7 27.3 18.7 20 21.7 27.3 ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Condensation of a vapour-gas mixture just begins, when (where, p = partial pressure of the vapour P = vapour pressure of the liquid ) P P = P P >>P P < P P P = P P >>P P < P ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer During the constant rate period of drying of a solid, Surface evaporation of unbound moisture occurs Increasing the air temperature decreases the drying rate None of these Increased air humidity decreases the rate of drying Surface evaporation of unbound moisture occurs Increasing the air temperature decreases the drying rate None of these Increased air humidity decreases the rate of drying ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer The temperature of water cooled in cooling tower is always __________ temperature of entering air. Less than the wet bulb Equal to the wet bulb Equal to the dry bulb More than the wet bulb Less than the wet bulb Equal to the wet bulb Equal to the dry bulb More than the wet bulb ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer In case of liquid-liquid binary diffusion, diffusivity of one constituent into another is not dependent on the None of these Nature of the constituents Temperature and pressure Concentration None of these Nature of the constituents Temperature and pressure Concentration ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Drying operation under vacuum is carried out to Reduce drying temperature Dry materials having high bound moisture content Dry those materials which have very high unbound mositure content Increase drying temperature Reduce drying temperature Dry materials having high bound moisture content Dry those materials which have very high unbound mositure content Increase drying temperature ANSWER DOWNLOAD EXAMIANS APP
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