Chemical Engineering MCQs

Page No. 294

The ratio of % total carbon obtained in the ultimate analysis of coke and % fixed carbon obtained in the proximate analysis is always ___________________?


a1

✖


b< 1

✖


c> 1

✓


dUnpredictable

✖


View Answer > 1

Low temperature oxidation and spontaneous combustion of freshly mined coal is accentuated, if __________________?


aIt contains large amount of volatile matter

✖


bIt is stored in tall heaps

✖


cSmaller fines are stored in large quantity

✖


dAll A., B. and C.

✓


View Answer All A., B. and C.

If the specific heat of gaseous products of combustion of a fuel is high, the abiabatic flame temperature will be_____________?


aLow

✓


bHigh

✖


cVery high, if the fuel is of low calorific value

✖


dNone of these

✖


View Answer Low

The main advantage of forced draft over natural draft is that____________________?


aCombustion of fuel is complete

✖


bSmaller height chimney can be used

✖


cFurnace control is easier

✖


dAll A., B. & C.

✓


View Answer All A., B. & C.

Oxygen percentage (by weight) in atmospheric air is_________________?


a19

✖


b21

✖


c23

✓


d29

✖


View Answer 23

Gasification of the solid fuel converts its organic part into combustible by interaction with air/oxygen and steam so as to obtain a secondary gaseous fuel of high calorific value having no ash. Gasification reactions are normally carried out at about _____________ °C?


a400-500

✖


b900-1000

✓


c1400-1500

✖


d1700-1800

✖


View Answer 900-1000

Oxygen content in a flue gas was found to be 4%. It implies that excess air used for combustion was around ______________ percent?


a4

✖


b96

✖


c20

✓


d40

✖


View Answer 20

Which of the following is not a by-product fuel ?


aSewage gas

✖


bRefinery gas

✖


cProducer gas

✓


dBagasse

✖


View Answer Producer gas

Sulphur in metallurgical coal__________________?


aContributes to its heating value

✖


bAffects the quality of steel produced as cracks develop on the surface while rolling the steel

✖


cBoth A. and B.

✓


dNeither A. nor B.

✖


View Answer Both A. and B.

Fusion point of coal ash increases with increase in its ____________ content?


aIron sulphate

✖


bIron silicate

✖


cLime and magnesia

✖


dAll A., B. and C.

✓


View Answer All A., B. and C.

Goto Page No.

Page 294 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