Chemical Engineering MCQs: 8,342 practice questions with answer choices and available explanations. Page 186 of 557.

Chemical Engineering MCQs

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Nuclear fuel generally used in reactors is uranium oxide instead of uranium, because the former has higher ________?

A.Density; hence core volume for a given power output would be smaller

B.Melting point, hence can be subjected to higher temperature

C.Resistance to effects of irradiation

D.All A., B. and C.

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

Submitted by: Academy of Pakistan

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Pick out the correct relationship. (Where, Ri = internal reflux ratio Ro = external reflux ratio.)?

A.(1 + Ri) = Ro/Ri

B.(1 + Ro) = Ro/Ri

Explanation: The correct answer is (1 + Ro) = Ro/Ri.

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Depreciation is ________ in profit with time?

A.Increase

B.None of these

C.No change

D.Decrease

Explanation: The correct answer is Decrease.

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The energy loss over a length of pipeline according to Darcy-Weisbach equation for pipe flow is ________ the mean velocity of flow?

A.Directly proportional to square of

B.Directly proportional to

C.Inversely proportional to

D.Inversely proportional to square of

Explanation: The correct answer is Directly proportional to square of.

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Adhesives________?

A.Cure instantaneously after application on a surface

B.Can’t join two dissimilar metals

C.None of these

D.Can’t be used in the form of pressure sensitive tapes

Explanation: The correct answer is None of these.

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Range of compressibility co-efficient of the commercial compressible cake obtained in filtration operation is________?

A.0.1 to 0.3

B.0.01 to 0.1

C.0.2 to 0.4

D.0.2 to 0.8

Explanation: The correct answer is 0.2 to 0.8.

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The impure iron (pig iron) that is tapped out from blast furnace contains about ________ percent carbon?

A.2

B.4

C.0.2

D.8

Explanation: The correct answer is 4.

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Aqueous nitric acid is stored in ________ vessel?

A.Cast iron

B.Thermosetting plastic material

C.Plain carbon steel

D.Stainless steel

Explanation: The correct answer is Cast iron.

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Power loss in an orificemeter is ________ that in a Venturimeter?

A.More than

B.Less than

C.Same as

D.Data insufficient, cannot be predicted

Explanation: The correct answer is More than.

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Temperature maintained in the emulsion polymerisation reactor for PVC manufacture is about ________ ° C?

A.500

B.50

C.-20

D.250

Explanation: The correct answer is 50.

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The excess energy of reactants in a chemical reaction required to dissociate into products is termed as the ________ energy?

A.Binding

B.Threshold

C.Activation

D.Potential

Explanation: The correct answer is Activation.

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Plate efficiency in a distillation column is reduced due to the ________ of liquid?

A.Entrainment

B.Weeping & dumping

C.Foaming

D.All A., B. & C.

Explanation: The correct answer is All A., B. & C..

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Rate of slag attack on refractories increases with rise in temperature due to the________?

A.Oxidising condition in the furnace

B.None of these

C.Increased thermal conductivity of brick

D.Decreased viscosity of slag

Explanation: The correct answer is Decreased viscosity of slag.

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The controlling resistance in a rotary drum vacuum filter is the ________ resistance?

A.Cake

B.Piping

C.Filter medium

D.None of these

Explanation: The correct answer is Cake.

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For infinite parallel planes having emissivities ε1 & ε2, the interchange factor for radiation from surface 1 to surface 2 is given by________?

A.ε1.ε2

B.ε1.ε2/(ε1 + ε2 – ε1.ε2)

C.(ε1 + ε2)/ε1.ε2

Explanation: The correct answer is ε1.ε2/(ε1 + ε2 – ε1.ε2).

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