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Chemical Engineering MCQs with Explanations

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441Chemical EngineeringMedium

Which of the following is desirable in petrol (gasoline) but undesirable in kerosene?

AAromatics

BMercaptans

CNaphthenic acid

DParaffins

Correct answer

B. Mercaptans

Explanation

The correct answer is Mercaptans.

442Chemical EngineeringMedium

For storing water and acid free benzol, use a ________ vessel?

AStainless steel

BNone of these

CKarbate

DSteel

Correct answer

D. Steel

Explanation

The correct answer is Steel.

443Chemical EngineeringMedium

When the momentum of one fluid is used for moving another fluid, such a device is called a/an________?

ABlower

BJet pump

CAcid egg

DNone of these

Correct answer

B. Jet pump

Explanation

The correct answer is Jet pump.

444Chemical EngineeringMedium

Venturimeters, orificemeters and nozzles are used to measure the fluid discharge from a pipeline. The average fluid velocity in a pipeline can be measured by a/an________?

ACup and vane anemometer

BHot wire anemometer

CWeir

DNone of these

Correct answer

B. Hot wire anemometer

Explanation

The correct answer is Hot wire anemometer.

445Chemical EngineeringMedium

In case of an ideal solution, the total vapor pressure varies ________ with the composition expressed as mole fraction?

AExponentially

BNone of these

CLinearly

DInversely

Correct answer

C. Linearly

Explanation

The correct answer is Linearly.

446Chemical EngineeringMedium

For a solid catalysed chemical reaction, the effectiveness of solid catalyst depends upon the ________ adsorption?

APhysical

BChemical

CNeither A. nor B.

DBoth A. and B.

Correct answer

B. Chemical

Explanation

The correct answer is Chemical.

447Chemical EngineeringMedium

The slope of the operating line for a single component co-current absorber when plotted in terms of mole ratio units is________?

A-ve

Correct answer

A. -ve

Explanation

The correct answer is -ve.

448Chemical EngineeringMedium

Clay treatment is used to remove ________?

ANone of these

BColour & dissolved gases from cracked gasoline

CWax from lube oil

DSalt from the crude oil

Correct answer

C. Wax from lube oil

Explanation

The correct answer is Wax from lube oil.

449Chemical EngineeringMedium

Fick’s law relates to________?

AFeed size

BEnergy consumption

CFinal particle size

DNone of these

Correct answer

B. Energy consumption

Explanation

The correct answer is Energy consumption.

450Chemical EngineeringMedium

In connection with corrosion of metals, passivation is the process that________?

AInhibits further deterioration

BNone of these

CChanges the composition of the metal

DIntensifies deterioration

Correct answer

A. Inhibits further deterioration

Explanation

The correct answer is Inhibits further deterioration.

441Chemical EngineeringMedium

Which of the following is desirable in petrol (gasoline) but undesirable in kerosene?

AAromatics

BMercaptans

CNaphthenic acid

DParaffins

Correct answer

B. Mercaptans

Explanation

The correct answer is Mercaptans.

442Chemical EngineeringMedium

For storing water and acid free benzol, use a ________ vessel?

AStainless steel

BNone of these

CKarbate

DSteel

Correct answer

D. Steel

Explanation

The correct answer is Steel.

443Chemical EngineeringMedium

When the momentum of one fluid is used for moving another fluid, such a device is called a/an________?

ABlower

BJet pump

CAcid egg

DNone of these

Correct answer

B. Jet pump

Explanation

The correct answer is Jet pump.

444Chemical EngineeringMedium

Venturimeters, orificemeters and nozzles are used to measure the fluid discharge from a pipeline. The average fluid velocity in a pipeline can be measured by a/an________?

ACup and vane anemometer

BHot wire anemometer

CWeir

DNone of these

Correct answer

B. Hot wire anemometer

Explanation

The correct answer is Hot wire anemometer.

445Chemical EngineeringMedium

In case of an ideal solution, the total vapor pressure varies ________ with the composition expressed as mole fraction?

AExponentially

BNone of these

CLinearly

DInversely

Correct answer

C. Linearly

Explanation

The correct answer is Linearly.

446Chemical EngineeringMedium

For a solid catalysed chemical reaction, the effectiveness of solid catalyst depends upon the ________ adsorption?

APhysical

BChemical

CNeither A. nor B.

DBoth A. and B.

Correct answer

B. Chemical

Explanation

The correct answer is Chemical.

447Chemical EngineeringMedium

The slope of the operating line for a single component co-current absorber when plotted in terms of mole ratio units is________?

A-ve

Correct answer

A. -ve

Explanation

The correct answer is -ve.

448Chemical EngineeringMedium

Clay treatment is used to remove ________?

ANone of these

BColour & dissolved gases from cracked gasoline

CWax from lube oil

DSalt from the crude oil

Correct answer

C. Wax from lube oil

Explanation

The correct answer is Wax from lube oil.

449Chemical EngineeringMedium

Fick’s law relates to________?

AFeed size

BEnergy consumption

CFinal particle size

DNone of these

Correct answer

B. Energy consumption

Explanation

The correct answer is Energy consumption.

450Chemical EngineeringMedium

In connection with corrosion of metals, passivation is the process that________?

AInhibits further deterioration

BNone of these

CChanges the composition of the metal

DIntensifies deterioration

Correct answer

A. Inhibits further deterioration

Explanation

The correct answer is Inhibits further deterioration.