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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.

At higher temperature, molal heat capacities of most of the gases (at constant pressure) ____________ with increase in temperature?

A Increases

B Decreases

C Remains unchanged

D Increases linearly

Review Detailed Answer

Correct Answer: Increases

For water evaporating into unsaturated air under adiabatic conditions and at constant pressure, the ____________ remains constant throughout the period of vaporisation ?

A Dry bulb temperature

B Wet bulb temperature

C Humidity

D Relative saturation

Review Detailed Answer

Correct Answer: Wet bulb temperature

Kinematic viscosity of 1 m2 /second is equivalent to _____________ stokes?

A 10

B 102

C 103

D 104

Review Detailed Answer

Correct Answer: 10

A vessel of volume 1000 m3 contains air which is saturated with water vapour. The total pressure and temperature are 100 kPa and 20°C respectively. Assuming that the vapour pressure of water at 20°C is 2.34 kPa, the amount of water vapour (in kg) in the vessel is approximately ?

A 17

B 20

C 25

D 34

Review Detailed Answer

Correct Answer: 17

The maximum adiabatic flame temperature of fuels in air is ____________ the maximum flame temperature in pure oxygen?

A Lower than

B Higher than

C Same as

D Not related to

Review Detailed Answer

Correct Answer: Lower than

During a phase change process like sublimation, vaporisation, melting etc., the specific ____________ does not change?

A Enthalpy

B Gibbs free energy

C Internal energy

D Entropy

Review Detailed Answer

Correct Answer: Gibbs free energy

Enthalpy of a vapor gas mixture may be increased by increasing the________________?

A Temperature at constant humidity

B Humidity at constant temperature

C Temperature and the humidity

D All A., B. & C.

Review Detailed Answer

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

The vapor pressure of liquids (having similar chemical nature) at any specified temperature ______________ with increasing molecular weight?

A Increases

B Decreases

C Remains unchanged

D Increases linearly

Review Detailed Answer

Correct Answer: Decreases

Sometimes, in chemical processes, a part of the outlet stream is rejected as waste in order to keep the impurity level in the system within limits. This phenomenon is termed as the_________________?

A Recycling

B Purging

C Bypassing

D Recirculation

Review Detailed Answer

Correct Answer: Purging

The average translational kinetic energy with which a gas molecule is endowed is dependent on its__________________?

A Nature

B Size

C Absolute temperature

D All A., B. & C.

Review Detailed Answer

Correct Answer: Absolute temperature

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Chemical Engineering Mcqs 9594 MCQs [All-Courses]

All Topics 9594

All Topics 9594

At higher temperature, molal heat capacities of most of the gases (at constant pressure) ____________ with increase in temperature?

For water evaporating into unsaturated air under adiabatic conditions and at constant pressure, the ____________ remains constant throughout the period of vaporisation ?

Kinematic viscosity of 1 m2 /second is equivalent to _____________ stokes?

A vessel of volume 1000 m3 contains air which is saturated with water vapour. The total pressure and temperature are 100 kPa and 20°C respectively. Assuming that the vapour pressure of water at 20°C is 2.34 kPa, the amount of water vapour (in kg) in the vessel is approximately ?

The maximum adiabatic flame temperature of fuels in air is ____________ the maximum flame temperature in pure oxygen?

During a phase change process like sublimation, vaporisation, melting etc., the specific ____________ does not change?

Enthalpy of a vapor gas mixture may be increased by increasing the________________?

The vapor pressure of liquids (having similar chemical nature) at any specified temperature ______________ with increasing molecular weight?

Sometimes, in chemical processes, a part of the outlet stream is rejected as waste in order to keep the impurity level in the system within limits. This phenomenon is termed as the_________________?

The average translational kinetic energy with which a gas molecule is endowed is dependent on its__________________?