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Chemical Engineering MCQs with Explanations

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491Chemical EngineeringMedium

Bright coal________?

AContains more than 90% durain

BContains mainly vitrain & clarain and is generally coking

CIs non-coking

DContains more than 90% fussain

Correct answer

B. Contains mainly vitrain & clarain and is generally coking

Explanation

The correct answer is Contains mainly vitrain & clarain and is generally coking.

492Chemical EngineeringMedium

The catalyst used in shift converter is ________?

ANickel

BAlumina

CSilica gel

DVanadium

Correct answer

A. Nickel

Explanation

The correct answer is Nickel.

493Chemical EngineeringMedium

An ideal plastic substance indicates no deformation, when stressed upto yield stress, but behaves like a Newtonian fluid beyond yield stress. Which of the following is an ideal plastic?

ARubber latex

BBlood

CSugar solution

DSewage sludge

Correct answer

D. Sewage sludge

Explanation

The correct answer is Sewage sludge.

494Chemical EngineeringMedium

________ determination is not a very significant and important test for gasoline?

AGum & sulphur content

BOctane number

CReid vapor pressure

DViscosity

Correct answer

D. Viscosity

Explanation

The correct answer is Viscosity.

495Chemical EngineeringMedium

In case of absorption & stripping, the interface of the liquid & gas phases are present in equilibrium, when the diffusional resistance of ________ is zero?

AGas phase

BAll A, B. & C.

CInterface

DLiquid phase

Correct answer

C. Interface

Explanation

The correct answer is Interface.

496Chemical EngineeringMedium

Percentage of alcohol in beer may be around ________ percent?

A27-32

B1-4

C2-8

D18-23

Correct answer

C. 2-8

Explanation

The correct answer is 2-8.

497Chemical EngineeringMedium

Choose the most important factor on which the heat conducted through a wall in a unit time will depend on?

ATemperature difference between the two surfaces of the wall

BArea of the wall perpendicular to heat flow

CThickness of the wall

DMaterial of the wall

Correct answer

A. Temperature difference between the two surfaces of the wall

Explanation

The correct answer is Temperature difference between the two surfaces of the wall.

498Chemical EngineeringMedium

A system is said to be isopiestic, if there is no ________ change?

ANone of these

BVolume

CTemperature

DPressure

Correct answer

D. Pressure

Explanation

The correct answer is Pressure.

499Chemical EngineeringMedium

Power consumption during turbulent flow in agitation tank is proportional to the ________ of the liquid?

AThermal conductivity

BViscosity

CSurface tension

DDensity

Correct answer

D. Density

Explanation

The correct answer is Density.

500Chemical EngineeringMedium

Which of the following is not correct for a reversible adiabatic process?

APVγ = constant

Bp1-γ.TY = constant

CTVγ-1 = constant

DNone of these

Correct answer

D. None of these

Explanation

The correct answer is None of these.

Bright coal________?

AContains more than 90% durain

BContains mainly vitrain & clarain and is generally coking

CIs non-coking

DContains more than 90% fussain

Correct answer

B. Contains mainly vitrain & clarain and is generally coking

Explanation

The correct answer is Contains mainly vitrain & clarain and is generally coking.

Choose the most important factor on which the heat conducted through a wall in a unit time will depend on?

ATemperature difference between the two surfaces of the wall

BArea of the wall perpendicular to heat flow

CThickness of the wall

DMaterial of the wall

Correct answer

A. Temperature difference between the two surfaces of the wall

Explanation

The correct answer is Temperature difference between the two surfaces of the wall.