Chemical Engineering MCQs: 8,342 practice questions with answer choices and available explanations. Page 318 of 557.

Chemical Engineering MCQs

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The energy balance equation over a tubular reactor under transient conditions is________?

A.A linear partial differential equation

B.An algebraic differential equation

C.An ordinary non-linear differential equation

D.A non-linear partial differential equation

Explanation: The correct answer is A linear partial differential equation.

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For an absorber, both equilibrium and operating line will be straight for ________?

A.Dilute solution and non-isothermal operation

B.Dilute solution and isothermal operation

C.Concentrated solution and non-isothermal operation

D.Concentrated solution and isothermal operation

Explanation: The correct answer is Dilute solution and isothermal operation.

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The function of skimming tank in sewage treatment is to remove ________ substances?

A.Dissolved solid

B.Gritty & inorganic

C.Suspended solid

D.Oil & fatty

Explanation: The correct answer is Oil & fatty.

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Pick out the wrong statement?

A.The fractional conversion at any time is same for both the constant as well as the variable

B.Hydrolysis of ester in presence of alkali or acid is a zero order reaction

C.The slowest step has the greatest influence on the overall reaction rate in case of an

D.Autocatalytic reactions are exemplified by microbial fermentation reactions

Explanation: The correct answer is Hydrolysis of ester in presence of alkali or acid is a zero order reaction.

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Applicability of Bernoulli’s equation is limited to a/an ________ fluid, that does not exchange shaft work with the surroundings?

A.Incompressible

B.Both A. and B.

C.Neither A. nor B.

D.Non-viscous

Explanation: The correct answer is Both A. and B..

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Nitrogen is an essential component of ________?

A.Carbohydrates

B.Proteins

C.Mineral salts

D.Fats

Explanation: The correct answer is Proteins.

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The essential ingredient of all the synthesis gas is________?

A.N2

B.H2

C.CO2

D.O2

Explanation: The correct answer is H2.

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Smoke volatility index is equal to smoke point plus________?

A.5 mm

B.0.42 × (% distilled at 204°C)

C.10 mm approximately

D.0.84 × (% distilled at 204°C)

Explanation: The correct answer is 0.42 × (% distilled at 204°C).

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A typical example of an exothermic reversible reaction conducted at high pressure in industry is________?

A.Reformation of methane

B.Dehydration of ethanol

C.Polymerisation of ethylene

D.Methanol synthesis

Explanation: The correct answer is Dehydration of ethanol.

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Pick out the correct statement?

A.Reactions with high activation energies are very temperature sensitive

B.A photochemical reaction is catalysed by light

C.A chemical reaction occurs when the energy of the reacting molecule is less than the activation energy of the reaction

D.Chemical equilibrium is a static state

Explanation: The correct answer is Reactions with high activation energies are very temperature sensitive.

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In a reaction, the threshold energy is equal to (where, A = activation energy N = normal energy of reactants)?

A.N

B.A + N

C.A

Explanation: The correct answer is A + N.

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Apex angle of conical heads used in the bottom heads of chemical process equipments is usually________?

A.45°

B.30°

C.60°

D.75°

Explanation: The correct answer is 60°.

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The maximum discharge through a circular channel takes place, when the depth of the fluid flow is ________ times the pipe diameter?

A.0.5

B.0.66

C.0.25

D.0.95

Explanation: The correct answer is 0.95.

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The ratio of the area of openings in one screen (Taylor series) to that of the openings in the next smaller screen is________?

A.√2

B.None of these

C.1.5

D.1

Explanation: The correct answer is None of these.

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Which of the following is unsuitable fuel for producer gas manufacture?

A.Coal having high fusion point of its ash

B.Anthracite

C.Coke

D.Coal having low fusion point of its ash

Explanation: The correct answer is Coal having low fusion point of its ash.

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