MCQs

Chemical Engineering MCQs with Explanations

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3361Chemical EngineeringMedium

The temperature at the eutectic point of the system is the ________ temperature that can be attained in the system?

AAverage

BLowest

CNone of these

DHighest

Correct answer

B. Lowest

Explanation

The correct answer is Lowest.

3362Chemical EngineeringMedium

Percentage of straight run gasoline in a typical crude oil may be around________?

A18

B38

C52

Correct answer

C. 52

Explanation

The correct answer is 52.

3363Chemical EngineeringMedium

Which of the following remains constant during sensible cooling process?

ANeither A. nor B.

BBoth A. and B.

CPartial pressure of vapour

DSpecific humidity

Correct answer

B. Both A. and B.

Explanation

The correct answer is Both A. and B..

3364Chemical EngineeringMedium

Economy of a multiple effect evaporator is not influenced much by the________?

ABoiling point elevations

BTemperature of the feed

CRatio of the weight of the thin liquor to thick liquor

DRate of heat transfer

Correct answer

A. Boiling point elevations

Explanation

The correct answer is Boiling point elevations.

3365Chemical EngineeringMedium

In the reaction, represented by, 2SO2 + O2 ⇌ 2SO3; ΔH = – 42 kcal; the forward reaction will be favoured by________?

ABoth A. and B

BLow temperature

CHigh pressure

DNeither A. nor B

Correct answer

A. Both A. and B

Explanation

The correct answer is Both A. and B.

3366Chemical EngineeringMedium

Wave length of X-rays is about 1 angstrom; however it cannot pass through a sheet of ________?

AAluminium

BLead

CPaper

DCloth

Correct answer

B. Lead

Explanation

The correct answer is Lead.

3367Chemical EngineeringMedium

Babbitt lining is used on brass/bronze bearings to increase the________?

ACompressive strength

BAntifriction properties

CBearing resistance

DWear resistance

Correct answer

D. Wear resistance

Explanation

The correct answer is Wear resistance.

3368Chemical EngineeringMedium

For a mixed flow reactor operating at steady state, the rate of reaction is given by________?

A(FA0/V) – (dCA/dt)

B-(dCA/dt)

C(FA0/V) XA

Correct answer

C. (FA0/V) XA

Explanation

The correct answer is (FA0/V) XA.

3369Chemical EngineeringMedium

Solution made by dissolving equimolar amounts of different solutes in the same amount of a given solvent will have the________?

ADifferent elevation in boiling point

BElevation in boiling point in the ratio of their molecular weights

CNone of these

DSame elevation in boiling point

Correct answer

D. Same elevation in boiling point

Explanation

The correct answer is Same elevation in boiling point.

3370Chemical EngineeringMedium

With the increase in depth, the hydrostatic pressure in an un-accelerated incompressible fluid (in a constant gravitational field)?

ARemain constant

BIncreases exponentially

CDecreases

DIncreases linearly

Correct answer

D. Increases linearly

Explanation

The correct answer is Increases linearly.

3361Chemical EngineeringMedium

The temperature at the eutectic point of the system is the ________ temperature that can be attained in the system?

AAverage

BLowest

CNone of these

DHighest

Correct answer

B. Lowest

Explanation

The correct answer is Lowest.

3362Chemical EngineeringMedium

Percentage of straight run gasoline in a typical crude oil may be around________?

A18

B38

C52

Correct answer

C. 52

Explanation

The correct answer is 52.

3363Chemical EngineeringMedium

Which of the following remains constant during sensible cooling process?

ANeither A. nor B.

BBoth A. and B.

CPartial pressure of vapour

DSpecific humidity

Correct answer

B. Both A. and B.

Explanation

The correct answer is Both A. and B..

3364Chemical EngineeringMedium

Economy of a multiple effect evaporator is not influenced much by the________?

ABoiling point elevations

BTemperature of the feed

CRatio of the weight of the thin liquor to thick liquor

DRate of heat transfer

Correct answer

A. Boiling point elevations

Explanation

The correct answer is Boiling point elevations.

3365Chemical EngineeringMedium

In the reaction, represented by, 2SO2 + O2 ⇌ 2SO3; ΔH = – 42 kcal; the forward reaction will be favoured by________?

ABoth A. and B

BLow temperature

CHigh pressure

DNeither A. nor B

Correct answer

A. Both A. and B

Explanation

The correct answer is Both A. and B.

3366Chemical EngineeringMedium

Wave length of X-rays is about 1 angstrom; however it cannot pass through a sheet of ________?

AAluminium

BLead

CPaper

DCloth

Correct answer

B. Lead

Explanation

The correct answer is Lead.

3367Chemical EngineeringMedium

Babbitt lining is used on brass/bronze bearings to increase the________?

ACompressive strength

BAntifriction properties

CBearing resistance

DWear resistance

Correct answer

D. Wear resistance

Explanation

The correct answer is Wear resistance.

3368Chemical EngineeringMedium

For a mixed flow reactor operating at steady state, the rate of reaction is given by________?

A(FA0/V) – (dCA/dt)

B-(dCA/dt)

C(FA0/V) XA

Correct answer

C. (FA0/V) XA

Explanation

The correct answer is (FA0/V) XA.

3369Chemical EngineeringMedium

Solution made by dissolving equimolar amounts of different solutes in the same amount of a given solvent will have the________?

ADifferent elevation in boiling point

BElevation in boiling point in the ratio of their molecular weights

CNone of these

DSame elevation in boiling point

Correct answer

D. Same elevation in boiling point

Explanation

The correct answer is Same elevation in boiling point.

3370Chemical EngineeringMedium

With the increase in depth, the hydrostatic pressure in an un-accelerated incompressible fluid (in a constant gravitational field)?

ARemain constant

BIncreases exponentially

CDecreases

DIncreases linearly

Correct answer

D. Increases linearly

Explanation

The correct answer is Increases linearly.