Mass Transfer For a fixed number of ideal stages in a distillation column, as the reflux ratio is increased, the difference in composition between the top and bottom product streams Remains unaffected Passes through a maximum Decreases Increases Remains unaffected Passes through a maximum Decreases Increases ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Boiling point diagram is Affected by pressure A plot of temperature vs. liquid composition Not affected by pressure A plot of temperature vs. vapour composition Affected by pressure A plot of temperature vs. liquid composition Not affected by pressure A plot of temperature vs. vapour composition ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer An air-water vapour mixture has a dry bulb temperature of 60°C and a dew point temperature of 40°C. The total pressure is 101.3 kPa and the vapour pressure of water at 40°C and 60°C are 7.30 kPa and 19.91 kPa respectively.The humidity of air sample expressed as kg of water vapour/kg of dry air is 0.048 0.122 0.152 0.079 0.048 0.122 0.152 0.079 ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer If a₁ and a₂ are the relative volatilities when the pressure in the distillation column is 1 and 2 atm respectively. Pick out the correct statement. a₁ = 2a₂ a₁ = a₂ None of these a₁ = 0.5 a₂ a₁ = 2a₂ a₁ = a₂ None of these a₁ = 0.5 a₂ 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 1.25 0.25 0.0025 2.5 1.25 0.25 0.0025 ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer In a binary distillation column, if the feed contains 40 mole % vapour, the q line will have a slope of -1.5 -0.6 0.6 1.5 -1.5 -0.6 0.6 1.5 ANSWER DOWNLOAD EXAMIANS APP
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