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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.

The Hatta number is important in______________________?

A Multi-component distillation

B Binary distillation

C Gas absorption without chemical reaction

D Gas absorption with chemical reaction

Review Detailed Answer

Correct Answer: Gas absorption with chemical reaction

For a binary mixture with low relative volatility________________?

A Use steam distillation

B Use molecular distillation

C Use high pressure distillation

D An azeotrope may be formed during distillation

Review Detailed Answer

Correct Answer: An azeotrope may be formed during distillation

The interfacial area per unit volume of dispersion, in a gas-liquid contactor, for fractional hold up of gas = 0.1 and gas bubble diameter = 0.5 mm is given by (in m2/m3) ?

A 500

B 1200

C 900

D 800

Review Detailed Answer

Correct Answer: 500

Rayleigh’s equation applies to _________________ distillation?

A Continuous

B Steam

C Differential

D Flash

Review Detailed Answer

Correct Answer: Differential

In extraction, as the temperature increases, the area of heterogeneity (area covered by binodal curve)________________?

A Decreases

B Increases

C Remains unchanged

D None of these

Review Detailed Answer

Correct Answer: Decreases

Blowdown in a cooling tower____________________?

A Means discarding a small fraction of circulating water to prevent and limit the concentration

B Increases the scale forming tendencies of water

C Is undesirable

D All A., B. & C.

Review Detailed Answer

Correct Answer: Means discarding a small fraction of circulating water to prevent and limit the concentration

Plate efficiency in a distillation column is reduced due to the ______________________ of liquid?

A Entrainment

B Foaming

C Weeping & dumping

D All A., B. & C.

Review Detailed Answer

Correct Answer: All A., B. & C.

The wet and ‘dry bulb temperature for a vapour-gas mixture are 25°C and 30°C respectively. If the mixture is heated to 45°C at constant pressure, the wet bulb temperature will be ______________ °C?

A 25

B > 25

C < 25

D – 25

Review Detailed Answer

Correct Answer: 25

Pick out the wrong statement. Raoult’s law does not apply, when the______________________?

A Size of component molecules are not equal

B Attractive forces between like and unlike molecules in the solution are approximately equal

C Component molecules are non-polar

D Chemical combination or molecular association between unlike molecules takes place in the

Review Detailed Answer

Correct Answer: Component molecules are non-polar

Pick out the wrong statement pertaining to the analogy between equations of heat and mass_________________?

A Sherwood number in mass transfer is analogous to Nusselt number in heat transfer

B Prandtl number in heat transfer is analogous to Schmidt number in mass transfer

C Reynolds number in mass transfer is analogous to Grashoff number in heat transfer

D Reynolds number remains the same in both heat and mass transfer

Review Detailed Answer

Correct Answer: Reynolds number in mass transfer is analogous to Grashoff number in heat transfer

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Chemical Engineering Mcqs 9594 MCQs [All-Courses]

All Topics 9594

All Topics 9594

The Hatta number is important in______________________?

For a binary mixture with low relative volatility________________?

The interfacial area per unit volume of dispersion, in a gas-liquid contactor, for fractional hold up of gas = 0.1 and gas bubble diameter = 0.5 mm is given by (in m2/m3) ?

Rayleigh’s equation applies to _________________ distillation?

In extraction, as the temperature increases, the area of heterogeneity (area covered by binodal curve)________________?

Blowdown in a cooling tower____________________?

Plate efficiency in a distillation column is reduced due to the ______________________ of liquid?

The wet and ‘dry bulb temperature for a vapour-gas mixture are 25°C and 30°C respectively. If the mixture is heated to 45°C at constant pressure, the wet bulb temperature will be ______________ °C?

Pick out the wrong statement. Raoult’s law does not apply, when the______________________?

Pick out the wrong statement pertaining to the analogy between equations of heat and mass_________________?