MCQs

Chemical Engineering MCQs with Explanations

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3321Chemical EngineeringMedium

200 mesh sieve size corresponds to ________ microns?

A200

B24

C154

D74

Correct answer

D. 74

Explanation

The correct answer is 74.

3322Chemical EngineeringMedium

B.E.T. method can be used to determine the ________ of a porous catalyst?

AAll A., B. and C.

BSolid density

CPore volume

DSurface area

Correct answer

D. Surface area

Explanation

The correct answer is Surface area.

3323Chemical EngineeringMedium

Non sulphonated hard bakelites are not used for making ________?

AFormica table tops

BIon-exchange resins

CCombs

DFountain pen barrels

Correct answer

B. Ion-exchange resins

Explanation

The correct answer is Ion-exchange resins.

3324Chemical EngineeringMedium

Pick out the wrong statement?

AA catalyst remains unchanged in chemical composition at the end the reaction

BA catalyst initiates a reaction

CA catalyst is specific in reaction

DA catalyst does not alter the final position of equilibrium in a reversible reaction

Correct answer

B. A catalyst initiates a reaction

Explanation

The correct answer is A catalyst initiates a reaction.

3325Chemical EngineeringMedium

Which of the following flow-metering instruments is an areameter?

AHot wire anemometer

BVenturimeter

CPitot tube

DRotameter

Correct answer

D. Rotameter

Explanation

The correct answer is Rotameter.

3326Chemical EngineeringMedium

Magnesite chrome bricks are used in the________?

AAll A., B. and C.

BSoaking pits

CRoof lining of basic open hearth & other basic furnaces

DReheating furnaces

Correct answer

A. All A., B. and C.

Explanation

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

3327Chemical EngineeringMedium

The expression for entropy change, ΔS = n Cp. ln (T2/T1), is valid for the ________ of a substance?

AHeating

BCooling

CBoth B. and C

DSimultaneous pressure & temperature change

Correct answer

C. Both B. and C

Explanation

The correct answer is Both B. and C.

3328Chemical EngineeringMedium

Maximum permissible air velocity in pipelines is about ________ metre/second?

A10

B40

D20

Correct answer

A. 10

Explanation

The correct answer is 10.

3329Chemical EngineeringMedium

Plastics are________?

ANon-biodegradable

BAll A., B. & C.

CUsed in very high temperature applications

DNot suitable for drainage pipe manufacture

Correct answer

A. Non-biodegradable

Explanation

The correct answer is Non-biodegradable.

3330Chemical EngineeringMedium

A mercury (specific gravity = 13.6) manometer connected across an orificemeter fitted in a pipe shows a manometer reading of 2 cms. If the manometer liquid is changed to carbon tetrachloride (specific gravity = 1.6), then for the same flow rate of water the new manometer reading will be ________ cms?

A84

B42

C1.8

D17

Correct answer

D. 17

Explanation

The correct answer is 17.

Pick out the wrong statement?

AA catalyst remains unchanged in chemical composition at the end the reaction

BA catalyst initiates a reaction

CA catalyst is specific in reaction

DA catalyst does not alter the final position of equilibrium in a reversible reaction

Correct answer

B. A catalyst initiates a reaction

Explanation

The correct answer is A catalyst initiates a reaction.