MCQs

Chemical Engineering MCQs with Explanations

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3501Chemical EngineeringMedium

The impure iron (pig iron) that is tapped out from blast furnace contains about ________ percent carbon?

C0.2

Correct answer

B. 4

Explanation

The correct answer is 4.

3502Chemical EngineeringMedium

Aqueous nitric acid is stored in ________ vessel?

ACast iron

BThermosetting plastic material

CPlain carbon steel

DStainless steel

Correct answer

A. Cast iron

Explanation

The correct answer is Cast iron.

3503Chemical EngineeringMedium

Power loss in an orificemeter is ________ that in a Venturimeter?

AMore than

BLess than

CSame as

DData insufficient, cannot be predicted

Correct answer

A. More than

Explanation

The correct answer is More than.

3504Chemical EngineeringMedium

Temperature maintained in the emulsion polymerisation reactor for PVC manufacture is about ________ ° C?

A500

B50

C-20

D250

Correct answer

B. 50

Explanation

The correct answer is 50.

3505Chemical EngineeringMedium

The excess energy of reactants in a chemical reaction required to dissociate into products is termed as the ________ energy?

ABinding

BThreshold

CActivation

DPotential

Correct answer

C. Activation

Explanation

The correct answer is Activation.

3506Chemical EngineeringMedium

Plate efficiency in a distillation column is reduced due to the ________ of liquid?

AEntrainment

BWeeping & dumping

CFoaming

DAll A., B. & C.

Correct answer

D. All A., B. & C.

Explanation

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

3507Chemical EngineeringMedium

Rate of slag attack on refractories increases with rise in temperature due to the________?

AOxidising condition in the furnace

BNone of these

CIncreased thermal conductivity of brick

DDecreased viscosity of slag

Correct answer

D. Decreased viscosity of slag

Explanation

The correct answer is Decreased viscosity of slag.

3508Chemical EngineeringMedium

The controlling resistance in a rotary drum vacuum filter is the ________ resistance?

ACake

BPiping

CFilter medium

DNone of these

Correct answer

A. Cake

Explanation

The correct answer is Cake.

3509Chemical EngineeringMedium

For infinite parallel planes having emissivities ε1 & ε2, the interchange factor for radiation from surface 1 to surface 2 is given by________?

Aε1.ε2

Bε1.ε2/(ε1 + ε2 – ε1.ε2)

C(ε1 + ε2)/ε1.ε2

Correct answer

B. ε1.ε2/(ε1 + ε2 – ε1.ε2)

Explanation

The correct answer is ε1.ε2/(ε1 + ε2 – ε1.ε2).

3510Chemical EngineeringMedium

An ideal gas can be liquefied, because ________?

AIt gets solidified directly without becoming liquid

BIts critical temperature is more than 0°C

CForces operative between its molecules are negligible

DIts molecular size is very small

Correct answer

C. Forces operative between its molecules are negligible

Explanation

The correct answer is Forces operative between its molecules are negligible.

An ideal gas can be liquefied, because ________?

AIt gets solidified directly without becoming liquid

BIts critical temperature is more than 0°C

CForces operative between its molecules are negligible

DIts molecular size is very small

Correct answer

C. Forces operative between its molecules are negligible

Explanation

The correct answer is Forces operative between its molecules are negligible.