Top 550+ Solved Mass Transfer MCQ Questions Answer
Q. Which of the following equipments is not used in liquid-liquid extraction?
a. Pachuka tank
b. Agitated vessels
c. Centrifugal extractors
d. Packed towers
Q. Flights in a rotary dryer are provided to
a. Lift and shower the solids thus exposing it thoroughly to the drying action of the gas
b. Reduce the residence time of solid
c. Increase the residence time of the solid
d. None of these
Q. In a forced draft cooling tower, water is cooled from 95 to 80°F by exposure to air with a wet bulb temperature of 70°F. In this case, the
a. Range is 15°F
b. Approach is 10°F
c. Both (A) & (B)
d. Neither (A) nor (B)
Q. To increase the absorption factor, (where, G = gas flow rate, S = solvent flow rate)
a. Increase both 'G' and 'S'
b. Decrease both 'G' and 'S'
c. Increase 'S' and decrease 'G'
d. Increase 'G' and decrease 'S'