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Chemical Engineering MCQs with Explanations

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461Chemical EngineeringMedium

Synthetic polymer produced by using terephthalic acid and ethylene glycol is ________?

APVC

BPolystyrene

CTerylene

DNylon-66

Correct answer

C. Terylene

Explanation

The correct answer is Terylene.

462Chemical EngineeringMedium

Brownian movement is prominent in the particle size range of ________ microns in case of settling of a particle in a fluid?

A0.01 to 0.10

B2 to 3

C100 to 1000

D200 to 300

Correct answer

B. 2 to 3

Explanation

The correct answer is 2 to 3.

463Chemical EngineeringMedium

The equilibrium liquid composition compared to the vapor composition in case of________?

AEither more or less; depends on the system

BMore

CSame

DLess

Correct answer

C. Same

Explanation

The correct answer is Same.

464Chemical EngineeringMedium

Bernoulli‟s equation does not apply to the functioning of a/an________?

AVenturimeter

BNone of these

Cpitot tube

DOrificemeter

Correct answer

B. None of these

Explanation

The correct answer is None of these.

465Chemical EngineeringMedium

High aniline point of a petrofuel (say diesel) indicates that ________?

AIts ignition quality is very poor

BIt is highly aromatic in nature

CIt is highly paraffinic in nature

DIt has a very low diesel index

Correct answer

C. It is highly paraffinic in nature

Explanation

The correct answer is It is highly paraffinic in nature.

466Chemical EngineeringMedium

For a binary mixture with low relative volatility________?

AAn azeotrope may be formed during distillation

BUse molecular distillation

CUse high pressure distillation

DUse steam distillation

Correct answer

A. An azeotrope may be formed during distillation

Explanation

The correct answer is An azeotrope may be formed during distillation.

467Chemical EngineeringMedium

In a multipass shell and tube heat exchanger, tube side return pressure loss is equal to ________ the velocity head?

ATwice

BSquare of

CFour times

DSquare root of

Correct answer

C. Four times

Explanation

The correct answer is Four times.

468Chemical EngineeringMedium

Sucrose content in cane sugar may be around ________ percent?

A50

B80

C70

D95

Correct answer

D. 95

Explanation

The correct answer is 95.

469Chemical EngineeringMedium

Essential oils are usually obtained using________?

ASteam distillation

BExtractive distillation

CLeaching

DSolvent extraction

Correct answer

C. Leaching

Explanation

The correct answer is Leaching.

470Chemical EngineeringMedium

Plexiglass (also called Lucite) because of its high optical transparency is used for making lenses. It is chemically________?

APolytetrafluroethylene (PTFE)

BPolycarbonates

CPhenolic resins

DPolymethyl methacrylate (PMMA)

Correct answer

D. Polymethyl methacrylate (PMMA)

Explanation

The correct answer is Polymethyl methacrylate (PMMA).

461Chemical EngineeringMedium

Synthetic polymer produced by using terephthalic acid and ethylene glycol is ________?

APVC

BPolystyrene

CTerylene

DNylon-66

Correct answer

C. Terylene

Explanation

The correct answer is Terylene.

462Chemical EngineeringMedium

Brownian movement is prominent in the particle size range of ________ microns in case of settling of a particle in a fluid?

A0.01 to 0.10

B2 to 3

C100 to 1000

D200 to 300

Correct answer

B. 2 to 3

Explanation

The correct answer is 2 to 3.

463Chemical EngineeringMedium

The equilibrium liquid composition compared to the vapor composition in case of________?

AEither more or less; depends on the system

BMore

CSame

DLess

Correct answer

C. Same

Explanation

The correct answer is Same.

464Chemical EngineeringMedium

Bernoulli‟s equation does not apply to the functioning of a/an________?

AVenturimeter

BNone of these

Cpitot tube

DOrificemeter

Correct answer

B. None of these

Explanation

The correct answer is None of these.

465Chemical EngineeringMedium

High aniline point of a petrofuel (say diesel) indicates that ________?

AIts ignition quality is very poor

BIt is highly aromatic in nature

CIt is highly paraffinic in nature

DIt has a very low diesel index

Correct answer

C. It is highly paraffinic in nature

Explanation

The correct answer is It is highly paraffinic in nature.

466Chemical EngineeringMedium

For a binary mixture with low relative volatility________?

AAn azeotrope may be formed during distillation

BUse molecular distillation

CUse high pressure distillation

DUse steam distillation

Correct answer

A. An azeotrope may be formed during distillation

Explanation

The correct answer is An azeotrope may be formed during distillation.

467Chemical EngineeringMedium

In a multipass shell and tube heat exchanger, tube side return pressure loss is equal to ________ the velocity head?

ATwice

BSquare of

CFour times

DSquare root of

Correct answer

C. Four times

Explanation

The correct answer is Four times.

468Chemical EngineeringMedium

Sucrose content in cane sugar may be around ________ percent?

A50

B80

C70

D95

Correct answer

D. 95

Explanation

The correct answer is 95.

469Chemical EngineeringMedium

Essential oils are usually obtained using________?

ASteam distillation

BExtractive distillation

CLeaching

DSolvent extraction

Correct answer

C. Leaching

Explanation

The correct answer is Leaching.

470Chemical EngineeringMedium

Plexiglass (also called Lucite) because of its high optical transparency is used for making lenses. It is chemically________?

APolytetrafluroethylene (PTFE)

BPolycarbonates

CPhenolic resins

DPolymethyl methacrylate (PMMA)

Correct answer

D. Polymethyl methacrylate (PMMA)

Explanation

The correct answer is Polymethyl methacrylate (PMMA).