Chemical Engineering MCQs

Page No. 687

Large scale drying of wheat is done in a ________________ dryer?


aFluidised bed

✖


bSpouted bed

✓


cTray

✖


dVacuum rotary

✖


View Answer Spouted bed

With increase in temperature, the leaching rate increases due to__________________?


aDecreased liquid viscosity

✖


bIncreased diffusivity

✖


cBoth A. and B.

✓


dNeither A. nor B.

✖


View Answer Both A. and B.

In distillation where q is defined as the moles of liquid flow in the stripping section per mole of feed introduced, for saturated liquid feed____________________?


aq > 1

✖


bq < 1

✖


cq = 1

✓


dq = 0

✖


View Answer q = 1

Though, theoretically the adsorption & desorption isotherms is expected to coincide but sometimes at least a part of the isotherms does not coincide and this phenomenon is known as adsorption hysteresis. In such cases, the desorption equilibrium pressure is ______________ that obtained for adsorption?


aLower than

✓


bHigher than

✖


cSame as

✖


dEither same or higher than

✖


View Answer Lower than

In an absorption column, the flooding velocity for random packing is ___________________ that for stacked/regular packing?


aGreater than

✖


bSmaller than

✓


cEqual to

✖


dEither A., or B.; depends on the type of packing

✖


View Answer Smaller than

In case of cooling towers, the ratio of the rates of heat and mass transfer is indicated by the ______________ number ?


aLewis

✓


bGrashoff

✖


cSherwood

✖


dNone of these

✖


View Answer Lewis

Unsaturated air (with dry and wet bulb temperatures being 35 and 25°C respectively) is passed through water spray chamber maintained at 35°C. The air will be__________________?


aCooled

✖


bHumidified

✓


cBoth A. & B.

✖


dDehumidified

✖


View Answer Humidified

Mass transfer co-efficient is defined as__________________?


aFlux = Co-efficient/concentration difference

✖


bCo-efficient = Flux/concentration difference

✓


cFlux=concentration difference/coefficient

✖


dNone of these

✖



Large quantity of silica gel is normally dried in a _________________ dryer?


aFreeze

✖


bThrough circulation

✓


cRotary vacuum

✖


dTray

✖


View Answer Through circulation

The value of „L/mG’ ratio for economical absorption operation ranges from _____________________?


a0.5 to 0.8

✖


b0.8 to 1.2

✖


c1.25 to 2.0

✓


d2.5 to 3.5

✖


View Answer 1.25 to 2.0

Goto Page No.

Page 687 of 843

Alphabetical MCQs Categories
—

Here below You find all kind of categories of MCQs in alphabetical order.


"Comprehensive Collection of MCQs: Alphabetically Organized by Subject"
—

"Discover an extensive collection of multiple-choice questions (MCQs) neatly categorized by subject from A to Z. This resource is designed for anyone eager to explore various topics in a straightforward and organized manner. Whether you're a student preparing for exams, an educator seeking supplementary materials, or simply curious about different subjects, this compilation offers a convenient way to learn and assess your knowledge. With questions arranged alphabetically, navigation is effortless, allowing you to delve into subjects of interest at your own pace. Engage, learn, and expand your understanding with this accessible and comprehensive repository of MCQs!"


BolPakistan

bolpakistan.com.pk includes Job Mcqs and Pak Mcqs is the Top Largest Mcqs Forum in World, in which you can read Mcqs of All Subjects, PPSC test preparation, FPSC, NTS and PPSC PAST PAPERS, PPSC PAST MCQS. A Collection of Repeated MCQs for JOBs seekers.

Copyright © 2024, Designed & Developed by BolPakistan