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Chemical Engineering MCQs with Explanations

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2851Chemical EngineeringMedium

Which of the following has the weakest intermolecular forces?

ABakelite

BPolystyrene

CNylon-66

DPolyisoprene

Correct answer

D. Polyisoprene

Explanation

The correct answer is Polyisoprene.

2852Chemical EngineeringMedium

Rivets are generally specified by the________?

AShank diameter

BOverall length

CHead diameter

DNone of these

Correct answer

A. Shank diameter

Explanation

The correct answer is Shank diameter.

2853Chemical EngineeringMedium

Grignard reagent is chemically known as ________?

AMethyl magnesium chloride

BEthyl magnesium chloride

CDichlorophenol

DMonochloroacetic acid

Correct answer

B. Ethyl magnesium chloride

Explanation

The correct answer is Ethyl magnesium chloride.

2854Chemical EngineeringMedium

Oxygen cylinders used for autogenous (cutting/welding) purposes are ________?

AMade by sand casting

BWelded steel cylinders

CHeat treated before use

DSeamless & made of steel

Correct answer

D. Seamless & made of steel

Explanation

The correct answer is Seamless & made of steel.

2855Chemical EngineeringMedium

Wrought iron is never shaped by________?

AWelding

BCold working

CForging

DCasting

Correct answer

D. Casting

Explanation

The correct answer is Casting.

2856Chemical EngineeringMedium

Sphericity is the ratio of the surface area of a spherical particle having the same volume as the particle to the surface area of the particle. Which of the following has the maximum value of sphericity?

ACube

BRaschig rings

CCylinder (L/D = 1)

DSphere

Correct answer

D. Sphere

Explanation

The correct answer is Sphere.

2857Chemical EngineeringMedium

For the reversible exothermic reaction, N2 + 3H2 ⇌ 2NH3, increase of pressure would________?

ANeither A. nor B

BGive higher yield of NH3

CShift the equilibrium towards right

DBoth B. and C

Correct answer

D. Both B. and C

Explanation

The correct answer is Both B. and C.

2858Chemical EngineeringMedium

In case of physical adsorption, the heat of adsorption is of the order of ________ kcal/kg mole?

A10000

B100000

C1000

D100

Correct answer

C. 1000

Explanation

The correct answer is 1000.

2859Chemical EngineeringMedium

The ________ of the fluid contained in the temperature sensing element (i.e., bulb) of filled system thermometers changes with change in temperature?

AViscosity

BAll A., B. and C.

CVolume

DPressure

Correct answer

B. All A., B. and C.

Explanation

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

2860Chemical EngineeringMedium

In the diving apparatus, helium is used along with oxygen, because it is ________?

ACompletely miscible with oxygen

BLighter than nitrogen

CEasily available

DNot soluble in blood at high pressure

Correct answer

D. Not soluble in blood at high pressure

Explanation

The correct answer is Not soluble in blood at high pressure.

2851Chemical EngineeringMedium

Which of the following has the weakest intermolecular forces?

ABakelite

BPolystyrene

CNylon-66

DPolyisoprene

Correct answer

D. Polyisoprene

Explanation

The correct answer is Polyisoprene.

2852Chemical EngineeringMedium

Rivets are generally specified by the________?

AShank diameter

BOverall length

CHead diameter

DNone of these

Correct answer

A. Shank diameter

Explanation

The correct answer is Shank diameter.

2853Chemical EngineeringMedium

Grignard reagent is chemically known as ________?

AMethyl magnesium chloride

BEthyl magnesium chloride

CDichlorophenol

DMonochloroacetic acid

Correct answer

B. Ethyl magnesium chloride

Explanation

The correct answer is Ethyl magnesium chloride.

2854Chemical EngineeringMedium

Oxygen cylinders used for autogenous (cutting/welding) purposes are ________?

AMade by sand casting

BWelded steel cylinders

CHeat treated before use

DSeamless & made of steel

Correct answer

D. Seamless & made of steel

Explanation

The correct answer is Seamless & made of steel.

2855Chemical EngineeringMedium

Wrought iron is never shaped by________?

AWelding

BCold working

CForging

DCasting

Correct answer

D. Casting

Explanation

The correct answer is Casting.

2856Chemical EngineeringMedium

Sphericity is the ratio of the surface area of a spherical particle having the same volume as the particle to the surface area of the particle. Which of the following has the maximum value of sphericity?

ACube

BRaschig rings

CCylinder (L/D = 1)

DSphere

Correct answer

D. Sphere

Explanation

The correct answer is Sphere.

2857Chemical EngineeringMedium

For the reversible exothermic reaction, N2 + 3H2 ⇌ 2NH3, increase of pressure would________?

ANeither A. nor B

BGive higher yield of NH3

CShift the equilibrium towards right

DBoth B. and C

Correct answer

D. Both B. and C

Explanation

The correct answer is Both B. and C.

2858Chemical EngineeringMedium

In case of physical adsorption, the heat of adsorption is of the order of ________ kcal/kg mole?

A10000

B100000

C1000

D100

Correct answer

C. 1000

Explanation

The correct answer is 1000.

2859Chemical EngineeringMedium

The ________ of the fluid contained in the temperature sensing element (i.e., bulb) of filled system thermometers changes with change in temperature?

AViscosity

BAll A., B. and C.

CVolume

DPressure

Correct answer

B. All A., B. and C.

Explanation

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

2860Chemical EngineeringMedium

In the diving apparatus, helium is used along with oxygen, because it is ________?

ACompletely miscible with oxygen

BLighter than nitrogen

CEasily available

DNot soluble in blood at high pressure

Correct answer

D. Not soluble in blood at high pressure

Explanation

The correct answer is Not soluble in blood at high pressure.