Chemical Engineering Mcqs 9594 MCQs [All-Courses]

Chemical Engineering MCQs designed for job test and interview preparation, particularly for fresh graduates, students, and candidates appearing in competitive exams. These multiple-choice questions cover important topics such as the fundamentals of chemical engineering, chemical processes, chemical reactions, process control, and instrumentation, along with other key concepts in the field.

_____________ fuels require the maximum percentage of ‘excess air’ for complete combustion ?

A Solid

B Liquid

C Gaseous

D Nuclear

Review Detailed Answer

Correct Answer: Solid

Acidity or alkanity of a solution is expressed by its pH value, which is defined as (where, [H+] = hydrogen ion concentration in the solution) ?

A log (1/H+)

B – log (1/H+)

C 1/log H+

D None of these

Review Detailed Answer

Correct Answer: log (1/H+)

Heat of transition is the heat evolved or absorbed, when a substance is converted from_________________?

A Vapor to liquid

B Vapor to solid

C Solid to liquid

D One allotropic form to another allotropic form

Review Detailed Answer

Correct Answer: One allotropic form to another allotropic form

The vapor pressure of water at 100°C is__________________?

A 100 N/m2

B 76 cms of Hg

C 13.6 cms of Hg

D 760 mm wc

Review Detailed Answer

Correct Answer: 76 cms of Hg

The OH- concentration in a solution having pH value 3 is____________________?

A 10-3

B 10-10

C 10-11

D 10-13

Review Detailed Answer

Correct Answer: 10-11

Kinetic theory of gases stipulates that, the____________________?

A Energy is lost during molecular collisions

B Molecules possess appreciable volume

C Absolute temperature is a measure of the kinetic energy of molecules

D None of these

Review Detailed Answer

Correct Answer: Absolute temperature is a measure of the kinetic energy of molecules

pH value of H2SO4 (5% concentration) is__________________?

A 5

B 7

C > 7

D < 7

Review Detailed Answer

Correct Answer: 7

Raoult’s law is not applicable to the___________________?

A Solutes which dissociate or associate in the particular solution

B Concentrated solutions

C Both B. & C.

D Solutions containing non-volatile solute

Review Detailed Answer

Correct Answer: Both B. & C.

Heat of neutralisation of a strong acid and strong base is always a constant value, i.e., 57 KJ/Kg mole. This is because_________________?

A The strong base and strong acid reacts completely

B The salt formed does not hydrolyse

C Only OH- and H+ ions react in every case

D The strong base and strong acid reacts in aqueous solution

Review Detailed Answer

Correct Answer: Only OH- and H+ ions react in every case

Heat of neutralisation of HCl and NaOH is – 57.46 kJ/Kg mole. The heat of ionisation of water will be _____________ kJ/Kg mole?

A 57.46

B -57.46

C 114.92

D -28.73

Review Detailed Answer

Correct Answer: 57.46

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Chemical Engineering Mcqs 9594 MCQs [All-Courses]

All Topics 9594

All Topics 9594

_____________ fuels require the maximum percentage of ‘excess air’ for complete combustion ?

Acidity or alkanity of a solution is expressed by its pH value, which is defined as (where, [H+] = hydrogen ion concentration in the solution) ?

Heat of transition is the heat evolved or absorbed, when a substance is converted from_________________?

The vapor pressure of water at 100°C is__________________?

The OH- concentration in a solution having pH value 3 is____________________?

Kinetic theory of gases stipulates that, the____________________?

pH value of H2SO4 (5% concentration) is__________________?

Raoult’s law is not applicable to the___________________?

Heat of neutralisation of a strong acid and strong base is always a constant value, i.e., 57 KJ/Kg mole. This is because_________________?

Heat of neutralisation of HCl and NaOH is – 57.46 kJ/Kg mole. The heat of ionisation of water will be _____________ kJ/Kg mole?