MCQs

Chemical Engineering MCQs with Explanations

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3471Chemical EngineeringMedium

Operating condition in the electrical dehydrators for crude oil is about________?

A1 atm. & 110 °C

B20 kgf/cm2 & 110°C

C50 atm. and 150°C

D6.5 kgf/Cm2 & 95°C

Correct answer

D. 6.5 kgf/Cm2 & 95°C

Explanation

The correct answer is 6.5 kgf/Cm2 & 95°C.

3472Chemical EngineeringMedium

25 per cent cut segmental baffle means that the baffle________?

AHeight is 75% of the I.D. of the shell

BHeight is 25% of the I.D. of the shell

CWidth is 25% of its height

DSpacing is 75% of its height

Correct answer

A. Height is 75% of the I.D. of the shell

Explanation

The correct answer is Height is 75% of the I.D. of the shell.

3473Chemical EngineeringMedium

Function of sodium thiosulphate (hypo) in development of photographic film/plate is to________?

ARemove unexposed silver halide

BRemove metallic silver

CBrighten the faint images

DConvert silver chloride to silver

Correct answer

A. Remove unexposed silver halide

Explanation

The correct answer is Remove unexposed silver halide.

3474Chemical EngineeringMedium

Window panes of aeroplanes are normally made of________?

APolystyrene

BBakelite (phenol formaldehyde)

CTeflon (PTFE)

DPerspex (PMMA)

Correct answer

D. Perspex (PMMA)

Explanation

The correct answer is Perspex (PMMA).

3475Chemical EngineeringMedium

Caustic soda can be stored in ________ drums?

ABrass

BCast iron

CSteel

DGun metal

Correct answer

C. Steel

Explanation

The correct answer is Steel.

3476Chemical EngineeringMedium

The local surface conductance for laminar film condensation on vertical surface is (where, t = film thickness) ________?

AIndependent of ‘t’

B∝ t

C∝ 1/t

Correct answer

C. ∝ 1/t

Explanation

The correct answer is ∝ 1/t.

3477Chemical EngineeringMedium

“Micum Index” of a coke is a measure of its________?

ABulk density

BPorosity

CHardness & strength

DReactivity

Correct answer

C. Hardness & strength

Explanation

The correct answer is Hardness & strength.

3478Chemical EngineeringMedium

How many phases are present at eutectic point?

Aunpredictable

Correct answer

C. 3

Explanation

The correct answer is 3.

3479Chemical EngineeringMedium

Langmuir equation is associated with________?

AMulti-component absorption

BLeaching

CSteam distillation

DAdsorption

Correct answer

D. Adsorption

Explanation

The correct answer is Adsorption.

3480Chemical EngineeringMedium

Which of the following is normally not found in both the S.I. (petrol) & C.I. (diesel) engines?

ABattery

BExhaust silencer

CFuel injector

DAir filter

Correct answer

C. Fuel injector

Explanation

The correct answer is Fuel injector.

3471Chemical EngineeringMedium

Operating condition in the electrical dehydrators for crude oil is about________?

A1 atm. & 110 °C

B20 kgf/cm2 & 110°C

C50 atm. and 150°C

D6.5 kgf/Cm2 & 95°C

Correct answer

D. 6.5 kgf/Cm2 & 95°C

Explanation

The correct answer is 6.5 kgf/Cm2 & 95°C.

3472Chemical EngineeringMedium

25 per cent cut segmental baffle means that the baffle________?

AHeight is 75% of the I.D. of the shell

BHeight is 25% of the I.D. of the shell

CWidth is 25% of its height

DSpacing is 75% of its height

Correct answer

A. Height is 75% of the I.D. of the shell

Explanation

The correct answer is Height is 75% of the I.D. of the shell.

3473Chemical EngineeringMedium

Function of sodium thiosulphate (hypo) in development of photographic film/plate is to________?

ARemove unexposed silver halide

BRemove metallic silver

CBrighten the faint images

DConvert silver chloride to silver

Correct answer

A. Remove unexposed silver halide

Explanation

The correct answer is Remove unexposed silver halide.

3474Chemical EngineeringMedium

Window panes of aeroplanes are normally made of________?

APolystyrene

BBakelite (phenol formaldehyde)

CTeflon (PTFE)

DPerspex (PMMA)

Correct answer

D. Perspex (PMMA)

Explanation

The correct answer is Perspex (PMMA).

3475Chemical EngineeringMedium

Caustic soda can be stored in ________ drums?

ABrass

BCast iron

CSteel

DGun metal

Correct answer

C. Steel

Explanation

The correct answer is Steel.

3476Chemical EngineeringMedium

The local surface conductance for laminar film condensation on vertical surface is (where, t = film thickness) ________?

AIndependent of ‘t’

B∝ t

C∝ 1/t

Correct answer

C. ∝ 1/t

Explanation

The correct answer is ∝ 1/t.

3477Chemical EngineeringMedium

“Micum Index” of a coke is a measure of its________?

ABulk density

BPorosity

CHardness & strength

DReactivity

Correct answer

C. Hardness & strength

Explanation

The correct answer is Hardness & strength.

3478Chemical EngineeringMedium

How many phases are present at eutectic point?

Aunpredictable

Correct answer

C. 3

Explanation

The correct answer is 3.

3479Chemical EngineeringMedium

Langmuir equation is associated with________?

AMulti-component absorption

BLeaching

CSteam distillation

DAdsorption

Correct answer

D. Adsorption

Explanation

The correct answer is Adsorption.

3480Chemical EngineeringMedium

Which of the following is normally not found in both the S.I. (petrol) & C.I. (diesel) engines?

ABattery

BExhaust silencer

CFuel injector

DAir filter

Correct answer

C. Fuel injector

Explanation

The correct answer is Fuel injector.