Mass Transfer MCQ Questions & Answers | Chemical Engineering

A. 1.2 to 1.5

B. 2.5 to 3

C. 3 to 4

D. 5

A. Vetrocoke solution

B. Monoethanol amine (MEA)

C. Dilute

D. Hot water

A. A solution of benzene, toluene and oxylene

B. 35% solution of camphor in water

C. 35% solution of NH₃ in water

D. A solution of polar organic compounds (not of homologs of a series)

A. Molal diffusivity

B. Volumetric co-efficient

C. Mass transfer co-efficient

D. None of these

A. N₂ and O₂ from air

B. Isotopes of uranium

C. Isotopes of helium

D. SO₂ and air

A. Composition of vapors and that of liquid do not vary throughout the column

B. Reboiler load and condenser load are minimum

C. The top and bottom compositions are unchanged with and without total reflux

D. The top and bottom compositions correspond to the maximum enrichment available

A. Raschig

B. Lessing

C. Cross-partition

D. Single spiral

A. An irreversible phenomenon

B. A reversible phenomenon

C. Accompanied by evolution of heat

D. Both B & C

A. Co-current absorbers are usually used, when the gas to be dissolved in the liquid is a pure substance

B. In case of gas absorption, HETP is equal to HTU, when both the operating line & the equilibrium lines are parallel

C. Hatta number is important in case of gas absorption with chemical reaction

D. In actual practice, absorption is an en-dothermic process, while stripping is an exothermic process

A. Is a function of the mass transfer between liquid and vapour

B. Increases due to foaming

C. Increases due to liquid entrainment

D. Increases due to weeping and dumping of liquid