Chemical Engineering MCQs

Page No. 312

A coal having higher volatile matter content, has lower_________________?


aSmoking tendency on burning

✖


bCoke oven gas yield on carbonisation

✖


cChance of catching fire during storage in open space

✖


dIgnition temperature

✓


View Answer Ignition temperature

Which of the following is unsuitable fuel for producer gas manufacture ?


aCoke

✖


bAnthracite

✖


cCoal having low fusion point of its ash

✓


dCoal having high fusion point of its ash

✖



Use of preheated air for combustion of fuel in the furnace, increases the___________________?


aScale losses of the furnace stock

✖


bCalorific value of the fuel

✖


cFlame temperature

✓


dNone of these

✖


View Answer Flame temperature

Which of the following is a poisonous fuel gas ?


aCoke oven gas

✖


bBlast furnace gas

✓


cNatural gas

✖


dNone of these

✖


View Answer Blast furnace gas

Blast furnace gas compared to coke oven gas has_________________?


aLower ignition temperature

✖


bNarrower limit of inflammability

✖


cHigher calorific value

✖


dLower theoretical flame temperature

✓



Which of the following has the highest calorific value (kcal/Nm3) ?


aCarburetted water gas

✖


bGobar gas

✖


cNatural gas

✖


dLPG

✓


View Answer LPG

The main function of primary air in pulverised coal fired burner is to_________________?


aBurn CO to CO2

✖


bDry and transport the coal

✓


cHave proper combustion by supplying it around the burner

✖


dPreheat the tertiary air used for complete combustion of CO to CO2

✖



Weathering of coal during storage causes_______________?


aReduction in coal size

✖


bIncrease in its friability

✖


cDecrease in its caking capacity

✖


dAll A., B. and C.

✓


View Answer All A., B. and C.

Number of macrocomponents present in coal according to Stopes are ___________________?


aFour

✓


bFive

✖


cSix

✖


dTwo

✖


View Answer Four

Which will have the least volatile matter and hence will be the most difficult to ignite ?


aBituminous coal

✖


bCoke

✓


cSemi-bituminous coal

✖


dAnthracite

✖


View Answer Coke

Goto Page No.

Page 312 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