Mass Transfer Raschig ring made of procelain cannot be used for treating concentrated Alkalis Nitric acid Hydrochloric acid Sulphuric acid Alkalis Nitric acid Hydrochloric acid Sulphuric acid ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer The feed to fractionating column is changed from saturated vapour to saturated liquid. If the separation and reflux ratio remains unchanged, the number of ideal stages will Increase Depend on saturated boiling point; may increase or decrease Remains same Decrease Increase Depend on saturated boiling point; may increase or decrease Remains same Decrease ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Can a cooling tower cool water below the wet bulb temperature of inlet air? Yes Yes ; but height of cooling tower will be prohibitively high No Yes ; but the air flow rate should be excessively high Yes Yes ; but height of cooling tower will be prohibitively high No Yes ; but the air flow rate should be excessively high ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Positive deviation from Raoult's law means a mixture whose total pressure is Less than the sum of the vapour pressure of the components None of these Greater than that computed for ideality Less than that computed for ideality Less than the sum of the vapour pressure of the components None of these Greater than that computed for ideality Less than that computed for ideality ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Diffusivity in concentrated solutions differs from that in dilute solutions, because of the changes in Neither A nor B Degree of ideality of the solution Both A & B Viscosity with concentration Neither A nor B Degree of ideality of the solution Both A & B Viscosity with concentration ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer A coalescer in a mixer-settler liquid-liquid extraction coloumn Helps in increasing the bubble size entering the settler All of these Helps in increasing the settling rate of the bubbles Comprises of thin bed of substances of extended surface having high porosity Helps in increasing the bubble size entering the settler All of these Helps in increasing the settling rate of the bubbles Comprises of thin bed of substances of extended surface having high porosity ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS