MCQs

Chemical Engineering MCQs with Explanations

Read every question, see the correct answer, and understand the explanation at your own pace. Study mode has no timer and no negative marking.

43%

3,560 of 8,342MCQs reviewed

Study Mode — explanations are always visiblePrefer a timed quiz? Start test

3561Chemical EngineeringMedium

In frictional fluid flow, the quantity, (P/ρ) + (V2/2gc) + gz/gc) is________?

ANone of these

BConstant along a streamline

CIncreased in the direction of flow

DNot constant along a streamline

Correct answer

D. Not constant along a streamline

Explanation

The correct answer is Not constant along a streamline.

3562Chemical EngineeringMedium

A Venturimeter measures the________?

AVelocity head

BPressure

CNone of these

DPoint velocity

Correct answer

C. None of these

Explanation

The correct answer is None of these.

3563Chemical EngineeringMedium

Hot face insulating linings of high purity alumina fused mullite are used, where________?

AHighly reducing conditions are involved

BPresence of iron or silica is harmful

CAll A., B. and C.

DVery high temperatures are involved

Correct answer

C. All A., B. and C.

Explanation

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

3564Chemical EngineeringMedium

Annual depreciation cost are not constant when, the ________ method of depreciation calculation is used?

ADeclining balance

BPresent worth

CSinking fund

DStraight line

Correct answer

A. Declining balance

Explanation

The correct answer is Declining balance.

3565Chemical EngineeringMedium

Joule-Thomson co-efficient depends on the________?

ABoth A. & B

BNeither A. nor B

CTemperature

DPressure

Correct answer

A. Both A. & B

Explanation

The correct answer is Both A. & B.

3566Chemical EngineeringMedium

Pure aniline is evaporating through a stagnant air film of 1 mm thickness at 300 K and a total pressure of 100 KPa. The vapor pressure of aniline at 300 K is 0.1 KPa. The total molar concentration under these conditions is 40.1 mole/m3. The diffusivity of aniline in air is 0.74 × 10-5m2/s. The numerical value of mass transfer co-efficient is 7.4 × 10-3. Its units are________?

Acm/s

Bmole/m2.s.Pa

Ck.mole/m2.s.Pa

Dm/s

Correct answer

B. mole/m2.s.Pa

Explanation

The correct answer is mole/m2.s.Pa.

3567Chemical EngineeringMedium

Global warming may result in ________?

ACyclone

BDecrease in food productivity

CAll A., B. and C.

DFlood

Correct answer

C. All A., B. and C.

Explanation

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

3568Chemical EngineeringMedium

For high pressure process equipments/vessels, the connected nozzle should be________?

AScrewed

BFlanged

CWelded

DBrazed

Correct answer

B. Flanged

Explanation

The correct answer is Flanged.

3569Chemical EngineeringMedium

Unit of viscosity in CGS system is________?

Agm. cm2. sec-2

Bgm.cm-1 sec-1

Cgm. cm. sec-1

Dgm.cm-2, sec-1

Correct answer

B. gm.cm-1 sec-1

Explanation

The correct answer is gm.cm-1 sec-1.

3570Chemical EngineeringMedium

An approximately ________ process exemplifies the flow of a gas through a very long pipe of uniform cross-section?

AIsentropic

BIsochoric

CAdiabatic

DIsothermal

Correct answer

D. Isothermal

Explanation

The correct answer is Isothermal.

3561Chemical EngineeringMedium

In frictional fluid flow, the quantity, (P/ρ) + (V2/2gc) + gz/gc) is________?

ANone of these

BConstant along a streamline

CIncreased in the direction of flow

DNot constant along a streamline

Correct answer

D. Not constant along a streamline

Explanation

The correct answer is Not constant along a streamline.

3562Chemical EngineeringMedium

A Venturimeter measures the________?

AVelocity head

BPressure

CNone of these

DPoint velocity

Correct answer

C. None of these

Explanation

The correct answer is None of these.

3563Chemical EngineeringMedium

Hot face insulating linings of high purity alumina fused mullite are used, where________?

AHighly reducing conditions are involved

BPresence of iron or silica is harmful

CAll A., B. and C.

DVery high temperatures are involved

Correct answer

C. All A., B. and C.

Explanation

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

3564Chemical EngineeringMedium

Annual depreciation cost are not constant when, the ________ method of depreciation calculation is used?

ADeclining balance

BPresent worth

CSinking fund

DStraight line

Correct answer

A. Declining balance

Explanation

The correct answer is Declining balance.

3565Chemical EngineeringMedium

Joule-Thomson co-efficient depends on the________?

ABoth A. & B

BNeither A. nor B

CTemperature

DPressure

Correct answer

A. Both A. & B

Explanation

The correct answer is Both A. & B.

3566Chemical EngineeringMedium

Pure aniline is evaporating through a stagnant air film of 1 mm thickness at 300 K and a total pressure of 100 KPa. The vapor pressure of aniline at 300 K is 0.1 KPa. The total molar concentration under these conditions is 40.1 mole/m3. The diffusivity of aniline in air is 0.74 × 10-5m2/s. The numerical value of mass transfer co-efficient is 7.4 × 10-3. Its units are________?

Acm/s

Bmole/m2.s.Pa

Ck.mole/m2.s.Pa

Dm/s

Correct answer

B. mole/m2.s.Pa

Explanation

The correct answer is mole/m2.s.Pa.

3567Chemical EngineeringMedium

Global warming may result in ________?

ACyclone

BDecrease in food productivity

CAll A., B. and C.

DFlood

Correct answer

C. All A., B. and C.

Explanation

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

3568Chemical EngineeringMedium

For high pressure process equipments/vessels, the connected nozzle should be________?

AScrewed

BFlanged

CWelded

DBrazed

Correct answer

B. Flanged

Explanation

The correct answer is Flanged.

3569Chemical EngineeringMedium

Unit of viscosity in CGS system is________?

Agm. cm2. sec-2

Bgm.cm-1 sec-1

Cgm. cm. sec-1

Dgm.cm-2, sec-1

Correct answer

B. gm.cm-1 sec-1

Explanation

The correct answer is gm.cm-1 sec-1.

3570Chemical EngineeringMedium

An approximately ________ process exemplifies the flow of a gas through a very long pipe of uniform cross-section?

AIsentropic

BIsochoric

CAdiabatic

DIsothermal

Correct answer

D. Isothermal

Explanation

The correct answer is Isothermal.