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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.

Which one of the following devices is not used for both the absorption as well as the liquidliquid extraction processes ?

A Packed towers

B Plate towers

C Spray towers

D Wetted wall columns

Review Detailed Answer

Correct Answer: Wetted wall columns

Relative volatility varies with the concentration of component for an ideal solution. The relative volatility of a binary mixture may be defined as the ratio of vapor pressure of component ‘A’ to that of component ‘B’, when_________________?

A Only vapor phase follows Raoult’s law

B Only liquid phase obeys Dalton’s law

C Liquid phase obeys Dalton’s law and vapor phase obeys Raoult’s law

D Vapor phase obeys Dalton’s law and liquid phase obeys Raoult’s law

Review Detailed Answer

Correct Answer: Vapor phase obeys Dalton’s law and liquid phase obeys Raoult’s law

Calculation of mass transfer co-efficient is mostly/normally done using ______________ theory?

A Surface renewal

B Film

C Penetration

D None of these

Review Detailed Answer

Correct Answer: Film

With increase in temperature, the leaching rate increases because of the _____________________?

A Increased diffusivity

B Decreased viscosity of liquid

C Both A. and B.

D Neither A. nor B.

Review Detailed Answer

Correct Answer: Both A. and B.

For a binary mixture distillation process, the degree of freedom is 2. However, if the pressure is fixed in this process, the number of independent variables in this process will be ___________________?

A 1

B 0

C 2

D 3

Review Detailed Answer

Correct Answer: 1

Moisture in a solid exerting an equilibrium vapour pressure equal to that of the pure liquid at the same temperature is called the ___________________ moisture ?

A Unbound

B Critical

C Free

D Bound

Review Detailed Answer

Correct Answer: Unbound

The change in enthalpy, when a unit quantity of gas is absorbed by relatively large quantity of adsorbent (on which a definite concentration of the adsorbed gas already exists) is termed as the_________________?

A Differential heat of adsorption

B Heat of wetting

C Integral heat of adsorption

D None of these

Review Detailed Answer

Correct Answer: Differential heat of adsorption

Swenson-Walker crystalliser is a __________________ unit ?

A Continuous

B Batch

C Semi-batch

D Cooling (adiabatic)-cum-evaporation

Review Detailed Answer

Correct Answer: Continuous

A 25 cm × 25 cm × 1 cm flat sheet weighing 1.2 kg initially was dried from both sides under constant drying rate conditions. It took 1500 seconds for the weight of the sheet to reduce to 1.05 kg. Another 1m × 1m × 1cm flat sheet of the same material is to be dried from one side only. Under the same constant drying rate conditions, the time required for drying (in seconds) from its initial weight of 19.2 kg to 17.6 kg is ____________________?

A 1000

B 1500

C 2000

D 2500

Review Detailed Answer

Correct Answer: 1000

Henry’s law states that the ________________________?

A Partial pressure of a component over a solution is proportional to its mole fraction in the

B Partial pressure of a component over a solution is proportional to the mole fraction in the

C Vapour pressure is equal to the product of the mole fraction and total pressure

D Partial pressure is equal to the product of the mole fraction and total pressure

Review Detailed Answer

Correct Answer: Partial pressure of a component over a solution is proportional to its mole fraction in the

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Chemical Engineering Mcqs 9594 MCQs [All-Courses]

All Topics 9594

All Topics 9594

Which one of the following devices is not used for both the absorption as well as the liquidliquid extraction processes ?

Relative volatility varies with the concentration of component for an ideal solution. The relative volatility of a binary mixture may be defined as the ratio of vapor pressure of component ‘A’ to that of component ‘B’, when_________________?

Calculation of mass transfer co-efficient is mostly/normally done using ______________ theory?

With increase in temperature, the leaching rate increases because of the _____________________?

For a binary mixture distillation process, the degree of freedom is 2. However, if the pressure is fixed in this process, the number of independent variables in this process will be ___________________?

Moisture in a solid exerting an equilibrium vapour pressure equal to that of the pure liquid at the same temperature is called the ___________________ moisture ?

The change in enthalpy, when a unit quantity of gas is absorbed by relatively large quantity of adsorbent (on which a definite concentration of the adsorbed gas already exists) is termed as the_________________?

Swenson-Walker crystalliser is a __________________ unit ?

Henry’s law states that the ________________________?