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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.

For a fixed number of ideal stages in a distillation column, as the reflux ratio is increased, the difference in composition between the top and bottom product streams__________________?

A Increases

B Decreases

C Remain unaffected

D Passes through a maximum

Review Detailed Answer

Correct Answer: Increases

The relative saturation of a partially saturated mixture of vapour and gas can be increased by ________________ of the mixture?

A Reducing the total pressure

B Increasing the total pressure

C Reducing the temperature

D Both B. and C.

Review Detailed Answer

Correct Answer: Both B. and C.

Steam distillation is used for separation of high boiling ____________________?

A Substances from non-volatile impurities

B Volatile impurity from still higher boiling substances

C Both A. and B.

D Neither A. nor B.

Review Detailed Answer

Correct Answer: Both A. and B.

When both the fluids flow concurrently in an absorber, the slope of the operating line is____________________?

A -ve

B +ve

C 1

D -1

Review Detailed Answer

Correct Answer: -ve

The McCabe ΔL law states that the____________________?

A Molar heats of vaporisation of components are nearly equal

B Linear crystal growth rate depends on the degree of super-saturation

C Linear crystal growth rate does not depend on the crystal size

D Linear crystal growth rate depends on the crystal size

Review Detailed Answer

Correct Answer: Linear crystal growth rate does not depend on the crystal size

Very tall packed towers are divided into series of beds to___________________?

A Reduce the overall pressure drop

B Avoid channelling

C Reduce liquid hold-up

D Avoid flooding

Review Detailed Answer

Correct Answer: Avoid channelling

Separation of the isotopes of helium for scientific investigations is done by_____________________?

A Reverse osmosis

B Thermal diffusion

C Leaching

D Solvent extraction

Review Detailed Answer

Correct Answer: Thermal diffusion

Flash distillation is suitable for the separation of components_________________?

A Having very close boiling points

B Which form maximum boiling azeotrope

C Having very wide boiling points

D Which form minimum boiling azeotrope

Review Detailed Answer

Correct Answer: Having very wide boiling points

If „f’ is defined as above, then which of the following applies to a feed at dew point ?

A f = 1

B f 1

D 0 < f < 1

Review Detailed Answer

Correct Answer: f = 1

According to Chilton-Colburn analogy for mass transfer, NSt.NSc 2/3 is equal to_________________?

A f

B f/2

C 2f

D 1/f

Review Detailed Answer

Correct Answer: f

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Chemical Engineering Mcqs 9594 MCQs [All-Courses]

All Topics 9594

All Topics 9594

For a fixed number of ideal stages in a distillation column, as the reflux ratio is increased, the difference in composition between the top and bottom product streams__________________?

The relative saturation of a partially saturated mixture of vapour and gas can be increased by ________________ of the mixture?

Steam distillation is used for separation of high boiling ____________________?

When both the fluids flow concurrently in an absorber, the slope of the operating line is____________________?

The McCabe ΔL law states that the____________________?

Very tall packed towers are divided into series of beds to___________________?

Separation of the isotopes of helium for scientific investigations is done by_____________________?

Flash distillation is suitable for the separation of components_________________?

If „f’ is defined as above, then which of the following applies to a feed at dew point ?

According to Chilton-Colburn analogy for mass transfer, NSt.NSc 2/3 is equal to_________________?