MCQs

Chemical Engineering MCQs with Explanations

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3341Chemical EngineeringMedium

Which of the following fastening devices has its both ends threaded?

ASet screw

BBolt

CStud

DSplit nut

Correct answer

C. Stud

Explanation

The correct answer is Stud.

3342Chemical EngineeringMedium

Larger length & diameter water pipes are made by________?

AElectrical resistance welding

BContinuous casting

CSemi-centrifugal casting

DDie casting

Correct answer

C. Semi-centrifugal casting

Explanation

The correct answer is Semi-centrifugal casting.

3343Chemical EngineeringMedium

The capacity of a spring to store energy is called the spring form co-efficient. Stiffness of a spring is measured by the________?

ARatio of the wire & coil diameters

BAbility to absorb shock

CLoad to produce unit deflection

DCapacity to store energy

Correct answer

C. Load to produce unit deflection

Explanation

The correct answer is Load to produce unit deflection.

3344Chemical EngineeringMedium

Noise level during normal conversation among men is about ________ decibels?

A45

B90

C115

D10

Correct answer

A. 45

Explanation

The correct answer is 45.

3345Chemical EngineeringMedium

Mercury is an ideal barometric fluid mainly due to its ________?

AHigh density

BVery low vapor pressure

CLow compressibility

DLow capillary action

Correct answer

B. Very low vapor pressure

Explanation

The correct answer is Very low vapor pressure.

3346Chemical EngineeringMedium

Growth of ________ is promoted by the presence of manganese in water?

AMosquitoes

BAlgae

CMicro-organisms

DFiles

Correct answer

C. Micro-organisms

Explanation

The correct answer is Micro-organisms.

3347Chemical EngineeringMedium

Calcination of gypsum produces________?

ANitre cake

BSalt cake

CLime

DPlaster of Paris

Correct answer

D. Plaster of Paris

Explanation

The correct answer is Plaster of Paris.

3348Chemical EngineeringMedium

A photo electric device in which the resistance of the metal is directly proportional to the light striking on it, is known as photo-conductive cell. Photoelectric transducers are used for the measurement of those parameters, which can be used to produce variation in________?

ACurrent

BFlux density

CVoltage

DLight intensity

Correct answer

D. Light intensity

Explanation

The correct answer is Light intensity.

3349Chemical EngineeringMedium

“When a system in equilibrium is subjected to a change in temperature, pressure or concentration, the equilibrium is displaced in a direction which tends to undo the effect of the change.” This is called the________?

AKopp’s rule

BLaw of corresponding state

CArrhenius hypothesis

DLe-Chatelier principle

Correct answer

D. Le-Chatelier principle

Explanation

The correct answer is Le-Chatelier principle.

3350Chemical EngineeringMedium

Cold work tool steel should have________?

AHigh toughness

BPoor hardenability

CAll A., B. & C.

DHigh wear resistance

Correct answer

D. High wear resistance

Explanation

The correct answer is High wear resistance.

3341Chemical EngineeringMedium

Which of the following fastening devices has its both ends threaded?

ASet screw

BBolt

CStud

DSplit nut

Correct answer

C. Stud

Explanation

The correct answer is Stud.

3342Chemical EngineeringMedium

Larger length & diameter water pipes are made by________?

AElectrical resistance welding

BContinuous casting

CSemi-centrifugal casting

DDie casting

Correct answer

C. Semi-centrifugal casting

Explanation

The correct answer is Semi-centrifugal casting.

3343Chemical EngineeringMedium

The capacity of a spring to store energy is called the spring form co-efficient. Stiffness of a spring is measured by the________?

ARatio of the wire & coil diameters

BAbility to absorb shock

CLoad to produce unit deflection

DCapacity to store energy

Correct answer

C. Load to produce unit deflection

Explanation

The correct answer is Load to produce unit deflection.

3344Chemical EngineeringMedium

Noise level during normal conversation among men is about ________ decibels?

A45

B90

C115

D10

Correct answer

A. 45

Explanation

The correct answer is 45.

3345Chemical EngineeringMedium

Mercury is an ideal barometric fluid mainly due to its ________?

AHigh density

BVery low vapor pressure

CLow compressibility

DLow capillary action

Correct answer

B. Very low vapor pressure

Explanation

The correct answer is Very low vapor pressure.

3346Chemical EngineeringMedium

Growth of ________ is promoted by the presence of manganese in water?

AMosquitoes

BAlgae

CMicro-organisms

DFiles

Correct answer

C. Micro-organisms

Explanation

The correct answer is Micro-organisms.

3347Chemical EngineeringMedium

Calcination of gypsum produces________?

ANitre cake

BSalt cake

CLime

DPlaster of Paris

Correct answer

D. Plaster of Paris

Explanation

The correct answer is Plaster of Paris.

3348Chemical EngineeringMedium

A photo electric device in which the resistance of the metal is directly proportional to the light striking on it, is known as photo-conductive cell. Photoelectric transducers are used for the measurement of those parameters, which can be used to produce variation in________?

ACurrent

BFlux density

CVoltage

DLight intensity

Correct answer

D. Light intensity

Explanation

The correct answer is Light intensity.

3349Chemical EngineeringMedium

“When a system in equilibrium is subjected to a change in temperature, pressure or concentration, the equilibrium is displaced in a direction which tends to undo the effect of the change.” This is called the________?

AKopp’s rule

BLaw of corresponding state

CArrhenius hypothesis

DLe-Chatelier principle

Correct answer

D. Le-Chatelier principle

Explanation

The correct answer is Le-Chatelier principle.

3350Chemical EngineeringMedium

Cold work tool steel should have________?

AHigh toughness

BPoor hardenability

CAll A., B. & C.

DHigh wear resistance

Correct answer

D. High wear resistance

Explanation

The correct answer is High wear resistance.