Chemical Engineering MCQs

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The most commonly used chemical coagulant in water treatment is________?

A.Lime

B.Alum

C.Ferrous sulphate

D.Hydrazine

Submitted by: Academy of Pakistan

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In the Newton’s law range, the terminal velocity of a solid spherical particle falling through a stationary fluid mass is ________ the fluid viscosity?

A.Inversely proportional to

B.Independent of

C.Inversely proportional to the square root of

D.Directly proportional to

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The ratio of momentum diffusivity to thermal diffusivity is the ________ number?

A.Prandtl

B.Grashoff

C.Stanton

D.Nusselt

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Which of the following is a thermodynamic property of a system?

A.Temperature

B.Concentration

C.Mass

D.Entropy

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Choose the correct set of dimensions of viscosity that are equivalent (where, F, M, L, T are dimensions for force, mass, length and time respectively)?

A.F-1L2T-1, MLT-3

B.FL-2T, ML-1T-1

C.ML-1T-3, F-1L2T

D.FLT, ML-1T-1

Submitted by: Academy of Pakistan

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The main pollutant in waste water discharged from a petroleum refinery is oil (both in free and emulsified form). Free oil is removed by________?

A.Biological oxygen pond

B.Gravity separator having oil skimming devices

C.Aerated lagoons

D.Trickling filters

Submitted by: Academy of Pakistan

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The specific cake resistance for incompressible sludges is (where ΔP = pressure drop over cake)________?

A.∝ 1/ ΔP

B.Independent of ΔP

C.∝ ΔP

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Quantity of coke produced from metallurgical coal may be around ________ percent?

A.95

B.50

C.75

D.30

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Optical activity of a solution can be determined using a ________?

A.Polarimeter

B.Dilatometer

C.Polarograph

D.Refractometer

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Chrome magnesite is not used in the ________?

A.Wear out lining of steel melting furnaces

B.Inner lining of L.D. converter

C.Aluminium melting furnaces

D.All A., and B. and C.

Submitted by: Academy of Pakistan

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Waste heat from the outgoing flue gases in a thermal power plant is recovered by a/an________?

A.Air preheater

B.All A., B. and C.

C.Steam superheater

D.Economiser

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Which of the following is the most important property for a jet fuel?

A.Cloud point

B.Freezing point

C.Pour point

D.Colour

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Mollier diagram is a plot of________?

A.Temperature vs. internal energy

B.Temperature vs. enthalpy

C.Entropy vs. enthalpy

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Number of phases in a colloidal system is________?

A.1

B.3

C.2

D.4

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Which of the following is a copolymer?

A.Polythene

B.Bakelite

C.PVC

D.Teflon

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Chemical Engineering MCQs

The most commonly used chemical coagulant in water treatment is________?

In the Newton’s law range, the terminal velocity of a solid spherical particle falling through a stationary fluid mass is ________ the fluid viscosity?

The ratio of momentum diffusivity to thermal diffusivity is the ________ number?

Which of the following is a thermodynamic property of a system?

Choose the correct set of dimensions of viscosity that are equivalent (where, F, M, L, T are dimensions for force, mass, length and time respectively)?

The main pollutant in waste water discharged from a petroleum refinery is oil (both in free and emulsified form). Free oil is removed by________?

The specific cake resistance for incompressible sludges is (where ΔP = pressure drop over cake)________?

Quantity of coke produced from metallurgical coal may be around ________ percent?

Optical activity of a solution can be determined using a ________?

Chrome magnesite is not used in the ________?

Waste heat from the outgoing flue gases in a thermal power plant is recovered by a/an________?

Which of the following is the most important property for a jet fuel?

Mollier diagram is a plot of________?

Number of phases in a colloidal system is________?

Which of the following is a copolymer?

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