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Chemical Engineering MCQs with Explanations

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861Chemical EngineeringMedium

LMTD correction factor is used in heat exchanger design for________?

AFouling fluids

BCounter flow of hot and cold fluids

CDouble pipe heat exchanger

DMultipass shell and tube heat exchanger

Correct answer

B. Counter flow of hot and cold fluids

Explanation

The correct answer is Counter flow of hot and cold fluids.

862Chemical EngineeringMedium

Silicone is a/an ________?

ANone of these

BMonomer

CThermoplastic

DInorganic polymer

Correct answer

D. Inorganic polymer

Explanation

The correct answer is Inorganic polymer.

863Chemical EngineeringMedium

Tabular bowl centrifuges as compared to disk bowl centrifuges________?

ACan’t be used for separation of fine suspended solids from a liquid

BEmploy bowl of larger diameter

CCan’t be operated under pressure/vacuum

DOperate at higher speed

Correct answer

D. Operate at higher speed

Explanation

The correct answer is Operate at higher speed.

864Chemical EngineeringMedium

In case of a continuous distillation column, increase in reflux ratio may result in the________?

AGreater cost for the reboiler heat supply

BAll A., B. and C.

CLower fixed charges for the column

DGreater cost for the condenser coolant

Correct answer

B. All A., B. and C.

Explanation

The correct answer is All A., B. and C..

865Chemical EngineeringMedium

Continuous measurement of moisture content of paper in paper industry is done by measuring the________?

ANone of these

BElectrical resistance through the paper

CMagnetic susceptibility

DThermal conductivity through the paper

Correct answer

B. Electrical resistance through the paper

Explanation

The correct answer is Electrical resistance through the paper.

866Chemical EngineeringMedium

‘Mixed gas’ used in steel plants is a mixture of________?

AB.F. gas and coke oven gas

BCoke oven gas and L.P.G

CCoke oven gas and converter gas

DBlast furnace gas and naphtha vapor

Correct answer

A. B.F. gas and coke oven gas

Explanation

The correct answer is B.F. gas and coke oven gas.

867Chemical EngineeringMedium

Which of the following is not a component of the fixed capital for a chemical plant facility?

AEmergency facilities

BUtilities plants

CProcess equipment

DRaw materials inventory

Correct answer

D. Raw materials inventory

Explanation

The correct answer is Raw materials inventory.

868Chemical EngineeringMedium

The softest material in Mho’s scale (for measuring hardness) is________?

ATalc

BRubber

CGypsum

DNone of these

Correct answer

A. Talc

Explanation

The correct answer is Talc.

869Chemical EngineeringMedium

Quicksand is an example of a ________ fluid?

ADilatant

BNewtonian

CPseudo plastic

DBingham plastic

Correct answer

A. Dilatant

Explanation

The correct answer is Dilatant.

870Chemical EngineeringMedium

Softness of silver can be converted into hardness by alloying it with small quantity of________?

AAluminium

BTin

CZinc

DCopper & nickel

Correct answer

D. Copper & nickel

Explanation

The correct answer is Copper & nickel.

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