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Chemical Engineering MCQs with Explanations

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2111Chemical EngineeringMedium

Volatile matter content in coking coal may be about ________ percent?

A46

C22

Correct answer

C. 22

Explanation

The correct answer is 22.

2112Chemical EngineeringMedium

Generally, elliptical dished heads________?

AAll A., B. and C.

BAre manufactured on 2:1 ratio of major to minor axis and is recommended to be used for

CAre approximately as strong as seamless cylindrical shell having the corresponding I.D and

DResist half the pressure rating compared to hemi spherical head provided on the cylindrical

Correct answer

A. All A., B. and C.

Explanation

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

2113Chemical EngineeringMedium

A relief valve________?

AUnloads a pump

BProvides back pressure for a cylinder

CNone of these

DIs a directional control valve

Correct answer

D. Is a directional control valve

Explanation

The correct answer is Is a directional control valve.

2114Chemical EngineeringMedium

In constant pressure filtration?

ARate of filtration increases with time

BRate of filtration is constant

CResistance decreases with time

DRate of filtration decreases with time

Correct answer

D. Rate of filtration decreases with time

Explanation

The correct answer is Rate of filtration decreases with time.

2115Chemical EngineeringMedium

A saturated vapor on being compressed would________?

ACondense

BBoth A. & B.

CForm wet steam

DNeither A. nor B.

Correct answer

B. Both A. & B.

Explanation

The correct answer is Both A. & B..

2116Chemical EngineeringMedium

Inside the distillation columns, the ________?

ADriving force for the liquid flow is its weight

BVapors are not always at their dew points

CAll A., B. and C.

DHighest temperatures is near the feed plate

Correct answer

A. Driving force for the liquid flow is its weight

Explanation

The correct answer is Driving force for the liquid flow is its weight.

2117Chemical EngineeringMedium

Which of the following is an endothermic reaction?

AAbsorption of SO3 in 98% H2SO4

BBoth B. and C.

CThermal dissociation of iron pyrites

DC + H2O = CO + H2

Correct answer

B. Both B. and C.

Explanation

The correct answer is Both B. and C..

2118Chemical EngineeringMedium

With increase in temperature, the solubility of gases in liquids, at fixed pressure________?

AEither A. or B., depends on the system

BDecreases

CIncreases

DRemain same

Correct answer

B. Decreases

Explanation

The correct answer is Decreases.

2119Chemical EngineeringMedium

Which of the following is the most common type of baffle used in industrial shell and tube heat exchanger?

ADisk and doughnut baffle

B75% cut segmental baffle

COrifice baffle

D25% cut segmental baffle

Correct answer

D. 25% cut segmental baffle

Explanation

The correct answer is 25% cut segmental baffle.

2120Chemical EngineeringMedium

Methyl isocyanate (MIC) gas (TLV <1 ppm), which caused Bhopal gas tragedy in 1984 falls under the category of ________ toxic gas?

AVery extremely

BModerately

CHighly

DExtremely

Correct answer

A. Very extremely

Explanation

The correct answer is Very extremely.

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