Mass Transfer The rough value of diffusion co-efficient of water vapor into air at 25°C may be about __________ cm²/sec. 1.25 0.0025 0.25 2.5 1.25 0.0025 0.25 2.5 ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Blowdown in a cooling tower Is undesirable All of these Increases the scale forming tendencies of water Means discarding a small fraction of circulating water to prevent and limit the concentration of salt and impurities Is undesirable All of these Increases the scale forming tendencies of water Means discarding a small fraction of circulating water to prevent and limit the concentration of salt and impurities ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer With decrease in the throughput (compared with the design capacity) for a bubble cap distillation column, its efficiency Decreases Increases May increase or decrease ; depends on individual design Remains same Decreases Increases May increase or decrease ; depends on individual design Remains same ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer To increase the absorption factor, (where, G = gas flow rate, S = solvent flow rate) Decrease both 'G' and 'S' Increase 'S' and decrease 'G' Increase 'G' and decrease 'S' Increase both 'G' and 'S' Decrease both 'G' and 'S' Increase 'S' and decrease 'G' Increase 'G' and decrease 'S' Increase both 'G' and 'S' ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer The reason for preferring packed towers over plate towers in distillation practice is that the packed tower operation gives Low pressure drop and high hold up High pressure drop and low hold up Low pressure drop and low hold up High pressure drop and high hold up Low pressure drop and high hold up High pressure drop and low hold up Low pressure drop and low hold up High pressure drop and high hold up ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer When the mixture to be distilled has a very high boiling point and the product material is heat sensitive, the separation technique to be used is __________ distillation. Continuous Azerotropic None of these Steam Continuous Azerotropic None of these Steam ANSWER DOWNLOAD EXAMIANS APP
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