Mass Transfer Prandtl number for water at 20°C is about 7 70 0.7 150 7 70 0.7 150 ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Which of the following psychrometric processes is followed by water vapour laden unsaturated air, when it is passed through solid or liquid adsorbent? Dehumidification with dry bulb temperature remaining constant Heating and dehumidification at almost constant wet bulb temperature None of these Cooling and dehumidification Dehumidification with dry bulb temperature remaining constant Heating and dehumidification at almost constant wet bulb temperature None of these Cooling and dehumidification ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer In case of physical adsorption, the difference between heat of adsorption and heat of normal condensation is Equal to the heat of formation of surface compound Called integral heat of adsorption Equal to the heat of wetting Zero Equal to the heat of formation of surface compound Called integral heat of adsorption Equal to the heat of wetting Zero ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Positive deviation from Raoult's law means a mixture whose total pressure is Greater than that computed for ideality None of these Less than that computed for ideality Less than the sum of the vapour pressure of the components Greater than that computed for ideality None of these Less than that computed for ideality Less than the sum of the vapour pressure of the components 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 = a₂ a₁ = 0.5 a₂ a₁ = 2a₂ None of these a₁ = a₂ a₁ = 0.5 a₂ a₁ = 2a₂ None of these 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 KL/DA² KL²/DA √(KL².DA) KL².DA KL/DA² KL²/DA √(KL².DA) ANSWER DOWNLOAD EXAMIANS APP
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