MCQs

Chemical Engineering MCQs with Explanations

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2421Chemical EngineeringMedium

Molality is defined as the number of gm moles of solute per ________ of solvent?

AKg

Bm3

CLitre

Dgm

Correct answer

A. Kg

Explanation

The correct answer is Kg.

2422Chemical EngineeringMedium

Branched chain polymers compared to linear polymers have higher ________?

ATensile strength

BDegree of irregularity in atomic packing

CMelting point

DDensity

Correct answer

B. Degree of irregularity in atomic packing

Explanation

The correct answer is Degree of irregularity in atomic packing.

2423Chemical EngineeringMedium

Titanium dioxide is a/an ________ colour pigment?

ABlack

BBlue

CYellow

DWhite

Correct answer

D. White

Explanation

The correct answer is White.

2424Chemical EngineeringMedium

Pick out the wrong statement?

ACrushing of explosive materials are done by employing dry-grinding

BGyratory crusher is a coarse crusher

CCake resistance is independent of the pressure drop

DFor the compressible cake, voidage & the specific resistance of the cake can be assumed to be

Correct answer

C. Cake resistance is independent of the pressure drop

Explanation

The correct answer is Cake resistance is independent of the pressure drop.

2425Chemical EngineeringMedium

A material capable of undergoing large permanent deformation, when subjected to tension is termed as________?

ABrittle

BNone of these

CFriable

DDuctile

Correct answer

D. Ductile

Explanation

The correct answer is Ductile.

2426Chemical EngineeringMedium

Reverberatory furnace is used for________?

AHeating air

BAnnealing steel coil

CRoasting/reduction of ores

DSteel melting

Correct answer

C. Roasting/reduction of ores

Explanation

The correct answer is Roasting/reduction of ores.

2427Chemical EngineeringMedium

Highest melting (m.p = 3070°C) oxide refractory is________?

AThoria

BAlumina

CZirconia

DMagnesia

Correct answer

A. Thoria

Explanation

The correct answer is Thoria.

2428Chemical EngineeringMedium

Volume occupied by one gm mole of a gas at S.T.P. is ________?

A22.4 c.c

B22400 litres

C359 litres

D22.4 litres

Correct answer

D. 22.4 litres

Explanation

The correct answer is 22.4 litres.

2429Chemical EngineeringMedium

The ends of a cylindrical vessel can be closed by a head, which can be one of the four shapes. For the same thickness, choose the one which can withstand the highest pressure?

AEllipsoidal

BFlat plate

CHemispherical

DTorispherical

Correct answer

A. Ellipsoidal

Explanation

The correct answer is Ellipsoidal.

2430Chemical EngineeringMedium

Overall thermal efficiency of a lumpy coal fired suitably designed heating furnace, if operated & maintained properly may be about ________ percent?

A10-15

B45-50

C25-30

D65-70

Correct answer

C. 25-30

Explanation

The correct answer is 25-30.

Pick out the wrong statement?

ACrushing of explosive materials are done by employing dry-grinding

BGyratory crusher is a coarse crusher

CCake resistance is independent of the pressure drop

DFor the compressible cake, voidage & the specific resistance of the cake can be assumed to be

Correct answer

C. Cake resistance is independent of the pressure drop

Explanation

The correct answer is Cake resistance is independent of the pressure drop.