MCQs

Chemical Engineering MCQs with Explanations

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2311Chemical EngineeringMedium

Cast iron vessels are not suitable for the storage of________?

AH2SO4 (fuming)

BH2SO4 (95%) at room temperature

CWet SO2

DFreon

Correct answer

C. Wet SO2

Explanation

The correct answer is Wet SO2.

2312Chemical EngineeringMedium

Sulphuric acid mist is arrested by using a ________ scrubber?

AVenturi

BHollow wet

CPacked wet

DCo-current

Correct answer

A. Venturi

Explanation

The correct answer is Venturi.

2313Chemical EngineeringMedium

Resistance to slag attack of a refractory ________?

ADepends on the nature of slag & refractory

BDecreases, if defective joints & cracks exist in the refractory

CDecreases at higher temperature

DAll A., B. and C.

Correct answer

D. All A., B. and C.

Explanation

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

2314Chemical EngineeringMedium

A fertilizer contains 82% N2. It could be________?

AUrea

BNone of these

CLiquid NH3

DAmmonium nitrate

Correct answer

C. Liquid NH3

Explanation

The correct answer is Liquid NH3.

2315Chemical EngineeringMedium

________ baffles are provided in ball mills?

AOnly two

BNone of these

CNo

DHorizontal

Correct answer

D. Horizontal

Explanation

The correct answer is Horizontal.

2316Chemical EngineeringMedium

The number of H+ in 1 c.c solution of pH 13 is________?

A6.023 × 1010

B6.023 × 107

C1013

D6.023 × 1013

Correct answer

B. 6.023 × 107

Explanation

The correct answer is 6.023 × 107.

2317Chemical EngineeringMedium

The variation of heat of reaction with temperature at constant pressure is given by the ________ law?

ANone of these

BAntoine’s

CKirchoff’s

DKelvin’s

Correct answer

C. Kirchoff’s

Explanation

The correct answer is Kirchoff’s.

2318Chemical EngineeringMedium

In a gas-liquid absorption column, for obtaining the maximum absorption efficiency________?

ABy passing should be completely avoided

BBoth gas as well as liquid streams should be distributed uniformly

CGas stream should be distributed uniformly

DLiquid stream should be distributed uniformly

Correct answer

B. Both gas as well as liquid streams should be distributed uniformly

Explanation

The correct answer is Both gas as well as liquid streams should be distributed uniformly.

2319Chemical EngineeringMedium

Machine moulding of dry mixture of refractories requires a pressure of the order of ________ kg/cm2?

A1000

B100

C10

D500

Correct answer

A. 1000

Explanation

The correct answer is 1000.

2320Chemical EngineeringMedium

Water filtration rate in a rapid sand filter ranges from ________ kilolitres/m2/hr?

A3 to 6

B0.1 to 1

C15 to 20

D10 to 15

Correct answer

A. 3 to 6

Explanation

The correct answer is 3 to 6.

In a gas-liquid absorption column, for obtaining the maximum absorption efficiency________?

ABy passing should be completely avoided

BBoth gas as well as liquid streams should be distributed uniformly

CGas stream should be distributed uniformly

DLiquid stream should be distributed uniformly

Correct answer

B. Both gas as well as liquid streams should be distributed uniformly

Explanation

The correct answer is Both gas as well as liquid streams should be distributed uniformly.