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.

45%

3,790 of 8,342MCQs reviewed

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

3791Chemical EngineeringMedium

Which of the following is not concerned with the fluid-particle interaction?

AFroude number

BWeber number

CDrag co-efficient

DGalileo number

Correct answer

B. Weber number

Explanation

The correct answer is Weber number.

3792Chemical EngineeringMedium

A pebble mill________?

AEmploys flints or ceramic pebbles as the grinding medium

BBoth B. and C.

CIs a tube mill lined with ceramic or other non-metallic liner

DIs a ball mill

Correct answer

B. Both B. and C.

Explanation

The correct answer is Both B. and C..

3793Chemical EngineeringMedium

Short distance transportation of grain, gravel, sand, ash, asphalt etc. is done by using a ________ conveyor?

AScrew

BFlight

CRibbon

DSlat or drag

Correct answer

A. Screw

Explanation

The correct answer is Screw.

3794Chemical EngineeringMedium

The individual mass transfer co-efficients (moles/m2s) for absorption of a solute from a gas mixture into a liquid solvent are, KL = 4.5 and KG = 1.5. The slope of the equilibrium line is 3. Which of the following resistance (s) is (are) controlling?

ABoth liquid and gas side

BGas side

CLiquid side

DInterfacial

Correct answer

B. Gas side

Explanation

The correct answer is Gas side.

3795Chemical EngineeringMedium

Which of the following has sodium bicarbonate as its main constituent?

AWashing soda

BBaking soda

CBaking powder

DNone of these

Correct answer

C. Baking powder

Explanation

The correct answer is Baking powder.

3796Chemical EngineeringMedium

Washing of coal________?

AAll A., B. and C.

BImproves its coking properties

CReduces its sulphur and ash content

DControls its ash fusibility and increases its calorific value

Correct answer

A. All A., B. and C.

Explanation

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

3797Chemical EngineeringMedium

For a fluid rotating at constant angular velocity about vertical axis as a rigid body, the pressure intensity varies as the________?

ASquare of the radial distance

BElevation along vertical direction

CRadial distance linearly

DInverse of the radial distance

Correct answer

A. Square of the radial distance

Explanation

The correct answer is Square of the radial distance.

3798Chemical EngineeringMedium

Number of gm moles of solute dissolved in one liter of a solution is called its________?

ANormality

BEquivalent weight

CMolality

DMolarity

Correct answer

D. Molarity

Explanation

The correct answer is Molarity.

3799Chemical EngineeringMedium

The characteristic dimensionless groups for heat transfer to a fluid flowing through a pipe in laminar flow are________?

ANu, Gz

BRe.Gz

CNu, Pr

DNu, Pr, Re

Correct answer

A. Nu, Gz

Explanation

The correct answer is Nu, Gz.

3800Chemical EngineeringMedium

The payback method for the measurement of return on investment________?

ADoes not measure the discounted rate of return

BGives a correct picture of profitability

CTakes into account the cash inflows after the recovery of investments

DUnderemphasises liquidity

Correct answer

A. Does not measure the discounted rate of return

Explanation

The correct answer is Does not measure the discounted rate of return.

The payback method for the measurement of return on investment________?

ADoes not measure the discounted rate of return

BGives a correct picture of profitability

CTakes into account the cash inflows after the recovery of investments

DUnderemphasises liquidity

Correct answer

A. Does not measure the discounted rate of return

Explanation

The correct answer is Does not measure the discounted rate of return.