Chemical Engineering MCQs: 8,342 practice questions with answer choices and available explanations. Page 289 of 557.

Chemical Engineering MCQs

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In high temperature carbonisation of coal compared to low temperature carbonisation?

A.H2 content in the coke oven gas is more

B.Yield of ammonia is less

C.Calorific value of the coke oven gas is lower

D.Aromatic content of tar is low

Explanation: The correct answer is H2 content in the coke oven gas is more.

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Reaction of calcium Fluorapatite with sulphuric acid produces ________?

A.Simple superphosphate

B.Triple superphosphate

C.Ortho-phosphoric acid

D.Red phosphorous

Explanation: The correct answer is Simple superphosphate.

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An isentropic process is carried out at constant________?

A.All (A), B. and (C)

B.Pressure

C.Volume

D.Temperature

Explanation: The correct answer is Volume.

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Maximum amount of thermal radiation is emitted at all wavelengths at any specified temperature by a/an ________ body?

A.Black

B.Opaque

C.White

D.Grey

Explanation: The correct answer is Grey.

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A highly elastic material is deformed least on loading and retains its original form on removal of the load. Which of the following is the most elastic material?

A.Glass

B.Steel

C.Rubber

D.Brass

Explanation: The correct answer is Steel.

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Maximum heat transfer rate can be expected in case of________?

A.Heat flow rate is independent of nature of flow

B.Co-current flow

C.Laminar flow

D.Turbulent flow

Explanation: The correct answer is Turbulent flow.

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Turbine impeller________?

A.Produces only tangential current

B.Does not produce tangential current

C.Is effective over wide range of viscosities

D.Produces only radial current

Explanation: The correct answer is Is effective over wide range of viscosities.

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In nylon-66, the first and second numbers (i.e., 6) respectively designate the number of carbon atoms present in the________?

A.None of these

B.Hexamethylene diamine and the ring

C.Adipic acid and the ring

D.Hexamethylene diamine and the adipic acid

Explanation: The correct answer is Hexamethylene diamine and the adipic acid.

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At a fixed total pressure, humidity depends only on the ________?

A.None of these

B.Partial pressure of vapour in the mixture

C.Density of the vapour

D.Heat capacity of the vapour

Explanation: The correct answer is Partial pressure of vapour in the mixture.

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Cetane number of alpha methyl naphthalene is assumed to be________?

A.50

B.0

C.100

Explanation: The correct answer is 0.

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________ is used for examining the macro-structure of a material?

A.Visual inspection by naked eye

B.Metallurgical microscope

C.X-rays

D.Optical microscope

Explanation: The correct answer is Visual inspection by naked eye.

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Sulphuric acid solution having a specific gravity of 1.20 at room temperature is used mainly for the________?

A.Synthesis of oleum

B.Water treatment

C.Car battery solution

D.fertilizer manufacture

Explanation: The correct answer is Car battery solution.

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Froth floatation is the most suitable for treating ________?

A.None of these

B.Sulphide ores

C.Iron ores

D.Quartzite

Explanation: The correct answer is Sulphide ores.

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All the atoms of the world comprise of electrons, proton & neutron except that of ________ atom in which neutron is absent?

A.Neon

B.Hydrogen

C.Deuterium

D.Helium

Explanation: The correct answer is Hydrogen.

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Promoter used in NH3 synthesis catalyst is________?

A.V2O5

B.SiO3

C.K2O

D.U2O3

Explanation: The correct answer is V2O5.

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