Chemical Engineering MCQs

Page No. 46

A standard test for determination of hardness in water is termed as ______________ test?


a EDTA

✓


bElectometric

✖


cTotal count

✖


dPresumptive

✖


View Answer EDTA

The function of skimming tank in sewage treatment is to remove _____________ substances?


a Dissolved solid

✖


bSuspended solid

✖


cOil & fatty

✓


dGritty & inorganic

✖


View Answer Oil & fatty

Lung cancer & DNA breakage are the major ill effects of excessive ozone exposure to human beings. Ozone layer depletion in the atmosphere is mainly caused by the presence of________________?


aCO2

✖


b SO2

✖


cHydrocarbons

✖


dCFC (chloro fluoro carbon)

✓



Which of the following is the most active zone of atmosphere in which weathering events like rain, storm & lightning occur ?


aThermosphere

✖


bTroposphere

✓


cStratosphere

✖


d None of these

✖


View Answer Troposphere

Which of the following is a manmade source of air pollution ?


aAutomobile exhaust

✓


bForest fire

✖


cBacterial action in soil and swamp areas

✖


d All A., B. and C.

✖


View Answer Automobile exhaust

Workers working in _______________ industry are most prone to white lung cancer?


aCoal mining

✖


bLimestone mining

✖


cTextile

✓


dAsbestos

✖


View Answer Textile

The weakest sound that can be heard by a person in a quiet environment is equivalent to ____________ decibel ?


a1

✓


b 5

✖


c10

✖


d50

✖


View Answer 1

______________ content of the phosphate rock is the pollutant of primary interest in a phosphatic fertiliser plant ?


aCalcium

✖


bFluorine

✓


c Phosphorous

✖


dSulphur

✖


View Answer Fluorine

Pick out the wrong statement?


aLoamy soil is the best soil for vigorous plant growth, while the clayey soil is solid and hence the plant roots penetrate with difficulty

✖


b Large excess use of nitrogenous fertiliser in land causes the problem of diarrhoea and cyanosis

✖


cApplication of large excess of Potassic fertiliser in soil increases the valuable carotene in fruits and vegetables

✓


dCereal crops grown on alkaline soil absorb higher amount of fluorides thereby spreading fluorosis

✖



Pick out the wrong statement?


aYellow phosphorous which is the most reactive allotropic form of phosphorous is transported under water

✖


bApatite is the principal material present in phosphate rock which is chemically Ca10 (PO4)6 (F, Cl, OH)

✖


cUrea is more hygroscopic than ammonium nitrate

✓


dNitrogen fixation means the process of bringing atmospheric nitrogen into combination i.e. into nitrogen compound form

✖



Goto Page No.

Page 46 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