MCQs

Chemical Engineering MCQs with Explanations

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701Chemical EngineeringMedium

For a constant volume process ________ by the system is used only to increase the internal energy?

AHeat absorbed

BNeither A. nor B

CBoth A. & B

DWork done

Correct answer

A. Heat absorbed

Explanation

The correct answer is Heat absorbed.

702Chemical EngineeringMedium

Main pollutants released from petroleum refineries is________?

ACO2, NO & SO3

BSO3, NO2 & CO2

CCO2, H2S & NO2

DCO, SO2 & H2S

Correct answer

D. CO, SO2 & H2S

Explanation

The correct answer is CO, SO2 & H2S.

703Chemical EngineeringMedium

Non-catalytic fluid-solid reactions are represented by ________ model?

ANeither A. and B.

BBoth A. and B.

CContinuous reaction

DUnreacted core

Correct answer

B. Both A. and B.

Explanation

The correct answer is Both A. and B..

704Chemical EngineeringMedium

High pressure coal gasification is employed in ________ process?

ALurgi

BKopper-Totzek

CNone of these

DWinkler

Correct answer

A. Lurgi

Explanation

The correct answer is Lurgi.

705Chemical EngineeringMedium

Dimension of absolute viscosity is________?

AMLT-1

BMLT

CML-1T

DML-1T-1

Correct answer

D. ML-1T-1

Explanation

The correct answer is ML-1T-1.

706Chemical EngineeringMedium

If the pressure of a gas is reduced to half & its absolute temperature is doubled, then the volume of the gas will________?

AIncrease two times

BBe reduced to 1/4th

CNone of these

DIncrease four times

Correct answer

A. Increase two times

Explanation

The correct answer is Increase two times.

707Chemical EngineeringMedium

Typical solvent polymerisation reaction conditions for the production of high density polythene by Zeigler process is________?

A1000 kgf/cm2 and 100°C

B7 kgf/cm2 and 70 °C

C7 kgf/cm2 and 700°C

D1 kgf/cm2 (gage) and 70°C

Correct answer

B. 7 kgf/cm2 and 70 °C

Explanation

The correct answer is 7 kgf/cm2 and 70 °C.

708Chemical EngineeringMedium

HPO3 is the chemical formula of ________ phosphoric acid?

ANone of these

BOrtho

CMeta

DPyro

Correct answer

C. Meta

Explanation

The correct answer is Meta.

709Chemical EngineeringMedium

Absorption/evolution of heat during conversion of a substance from one allotropic form to another is termed as the heat of ________?

ATransition

BVaporisation

CSublimation

DFusion

Correct answer

A. Transition

Explanation

The correct answer is Transition.

710Chemical EngineeringMedium

The operating velocity in the absorption tower is usually 40-50% of the flooding velocity. Packed absorption towers are normally designed for a pressure drop of about ________ mm of water column per metre height of packing?

A20-40

B1000-1500

C1-5

D100-150

Correct answer

A. 20-40

Explanation

The correct answer is 20-40.

701Chemical EngineeringMedium

For a constant volume process ________ by the system is used only to increase the internal energy?

AHeat absorbed

BNeither A. nor B

CBoth A. & B

DWork done

Correct answer

A. Heat absorbed

Explanation

The correct answer is Heat absorbed.

702Chemical EngineeringMedium

Main pollutants released from petroleum refineries is________?

ACO2, NO & SO3

BSO3, NO2 & CO2

CCO2, H2S & NO2

DCO, SO2 & H2S

Correct answer

D. CO, SO2 & H2S

Explanation

The correct answer is CO, SO2 & H2S.

703Chemical EngineeringMedium

Non-catalytic fluid-solid reactions are represented by ________ model?

ANeither A. and B.

BBoth A. and B.

CContinuous reaction

DUnreacted core

Correct answer

B. Both A. and B.

Explanation

The correct answer is Both A. and B..

704Chemical EngineeringMedium

High pressure coal gasification is employed in ________ process?

ALurgi

BKopper-Totzek

CNone of these

DWinkler

Correct answer

A. Lurgi

Explanation

The correct answer is Lurgi.

705Chemical EngineeringMedium

Dimension of absolute viscosity is________?

AMLT-1

BMLT

CML-1T

DML-1T-1

Correct answer

D. ML-1T-1

Explanation

The correct answer is ML-1T-1.

706Chemical EngineeringMedium

If the pressure of a gas is reduced to half & its absolute temperature is doubled, then the volume of the gas will________?

AIncrease two times

BBe reduced to 1/4th

CNone of these

DIncrease four times

Correct answer

A. Increase two times

Explanation

The correct answer is Increase two times.

707Chemical EngineeringMedium

Typical solvent polymerisation reaction conditions for the production of high density polythene by Zeigler process is________?

A1000 kgf/cm2 and 100°C

B7 kgf/cm2 and 70 °C

C7 kgf/cm2 and 700°C

D1 kgf/cm2 (gage) and 70°C

Correct answer

B. 7 kgf/cm2 and 70 °C

Explanation

The correct answer is 7 kgf/cm2 and 70 °C.

708Chemical EngineeringMedium

HPO3 is the chemical formula of ________ phosphoric acid?

ANone of these

BOrtho

CMeta

DPyro

Correct answer

C. Meta

Explanation

The correct answer is Meta.

709Chemical EngineeringMedium

Absorption/evolution of heat during conversion of a substance from one allotropic form to another is termed as the heat of ________?

ATransition

BVaporisation

CSublimation

DFusion

Correct answer

A. Transition

Explanation

The correct answer is Transition.

710Chemical EngineeringMedium

The operating velocity in the absorption tower is usually 40-50% of the flooding velocity. Packed absorption towers are normally designed for a pressure drop of about ________ mm of water column per metre height of packing?

A20-40

B1000-1500

C1-5

D100-150

Correct answer

A. 20-40

Explanation

The correct answer is 20-40.