Mass Transfer The binary diffusivity in gases at atmospheric conditions is about 10-1 cm²/sec 10-3 sec/cm 10-9 cm/sec 10-4 cm²/seC₂ 10-1 cm²/sec 10-3 sec/cm 10-9 cm/sec 10-4 cm²/seC₂ ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer In extractive distillation, solvent is Added to alter the relative volatility of the mixture Of high viscosity to give high tray efficiency Of high volatility Present in overhead stream Added to alter the relative volatility of the mixture Of high viscosity to give high tray efficiency Of high volatility Present in overhead stream ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer In a counter-current liquid extractor Only one of the liquids may be pumped at any desired rate Both liquids can have any desired flow rate Liquid's flow rate depends upon the temperature and pressure Both liquids flow at fixed rate Only one of the liquids may be pumped at any desired rate Both liquids can have any desired flow rate Liquid's flow rate depends upon the temperature and pressure Both liquids flow at fixed rate ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer During the constant rate period of drying of a solid, Increasing the air temperature decreases the drying rate Surface evaporation of unbound moisture occurs Increased air humidity decreases the rate of drying None of these Increasing the air temperature decreases the drying rate Surface evaporation of unbound moisture occurs Increased air humidity decreases the rate of drying None of these ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Liquid diffusivity is of the order of __________ cm² /second. > 1 0.1 10-5 to 10-6 0.01 > 1 0.1 10-5 to 10-6 0.01 ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer The value of NA/(NA + NB), for steady state equimolal counter diffusion of two gases 'A' and 'B' is 0.5 1 2 ∞ 0.5 1 2 ∞ ANSWER DOWNLOAD EXAMIANS APP
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