Mass Transfer Archives - Page 79 of 93 -

Can the efficiency of a plate in the distillation tower be greater than 100% ?

Can the efficiency of a plate in the distillation tower be greater than 100% ?

A. Yes
B. Normally not; but is possible if infinite number of plates are put
C. Never
D. Yes; if the reflux ratio is maximum

Can the efficiency of a plate in the distillation tower be greater than 100% ? Read More »

Mass Transfer

With the lowering of equilibrium pressure, at a given temperature, the amount of adsorbate on the adsorbent ?

Mass Transfer / admin

With the lowering of equilibrium pressure, at a given temperature, the amount of adsorbate on the adsorbent ?

A. Increases
B. Decreases
C. Remain same
D. Either A. or B., depends on the system

With the lowering of equilibrium pressure, at a given temperature, the amount of adsorbate on the adsorbent ? Read More »

Mass Transfer

H2S present in naphtha reformed gas is removed by absorbing with___________________?

Mass Transfer / admin

H2S present in naphtha reformed gas is removed by absorbing with___________________?

A. Ethanolamine
B. K2CO3
C. HCl
D. Vacuum gas oil

H2S present in naphtha reformed gas is removed by absorbing with___________________? Read More »

Mass Transfer

In liquid extraction, if the selectivity is unity, then__________________?

Mass Transfer / admin

In liquid extraction, if the selectivity is unity, then__________________?

A. Separation of the constituents is the most effective
B. No separation will occur
C. Amount of solvent required will be minimum
D. Solvent flow rate should be very low

In liquid extraction, if the selectivity is unity, then__________________? Read More »

Mass Transfer

Drying of a wet solid under constant drying conditions means the exposure of the wet solid to the air of constant______________________?

Mass Transfer / admin

Drying of a wet solid under constant drying conditions means the exposure of the wet solid to the air of constant______________________?

A. Humidity
B. Velocity
C. Temperature
D. All A., B. & C.

Drying of a wet solid under constant drying conditions means the exposure of the wet solid to the air of constant______________________? Read More »

Mass Transfer

Design calculation for multiple component distillation is done by_________________?

Mass Transfer / admin

Design calculation for multiple component distillation is done by_________________?

A. Ponchon-Savarit method
B. McCabe-Thiele method
C. Enthalpy concentration method
D. Tray to tray calculations

Design calculation for multiple component distillation is done by_________________? Read More »

Mass Transfer

Laboratory determination of the diffusivity of vapor is done by ______________ method?

Mass Transfer / admin

Laboratory determination of the diffusivity of vapor is done by ______________ method?

A. Wetted wall column
B. Gilliland’s
C. Winkelmann’s
D. Wike’s

Laboratory determination of the diffusivity of vapor is done by ______________ method? Read More »

Mass Transfer

Paper industry employs _____________ driers ?

Mass Transfer / admin

Paper industry employs _____________ driers ?

A. Cylinder
B. Rotary
C. Spray
D. Fluidised bed

Paper industry employs _____________ driers ? Read More »

Mass Transfer

Use of packed towers for distillation is generally limited to the__________________?

Mass Transfer / admin

Use of packed towers for distillation is generally limited to the__________________?

A. Small sizes
B. Multi-component distillation
C. High pressure operation
D. Vacuum distillation

Use of packed towers for distillation is generally limited to the__________________? Read More »

Mass Transfer

_____________ extractor is used for the concentration of radioactive nuclear waste?

Mass Transfer / admin

_____________ extractor is used for the concentration of radioactive nuclear waste?

A. Pulsed column
B. Sieve plate
C. Mixer-settler
D. Bollman

_____________ extractor is used for the concentration of radioactive nuclear waste? Read More »

Mass Transfer