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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.

If xD = overhead product molal composition and RD = reflux ratio, then slope and intercept of the operating line for rectifying section are respectively ?

A [xD/(RD + 1)], [RD/(RD + 1)]

B [RD/(RD + 1)], [xD/(xD + 1)]

C [xD/(RD + 1)], [(RD + 1)/RD]

D None of these

Review Detailed Answer

Correct Answer: [RD/(RD + 1)], [xD/(xD + 1)]

Hydrogenation of oil is carried out in a/an _______________ in Vanaspati manufacturing plant?

A Agitated vessel

B Sieve tray column

C Bubble cap column

D Packed tower

Review Detailed Answer

Correct Answer: Agitated vessel

Fenske equation determines the __________________?

A Maximum number of ideal plates

B Height of the distillation column

C Minimum number of theoretical plates

D Optimum reflux ratio

Review Detailed Answer

Correct Answer: Minimum number of theoretical plates

Pick out the wrong statement ?

A The mole fraction of solute is directly proportional to the molality of a ‘dilute’ solution

B For a non-reacting binary mixture of ideal gases, the partial pressure distribution of both

C Azeotropes obey Raoult’s law at all temperature

D The relative volatility of a binary mixture at the Azeotropic composition is 1

Review Detailed Answer

Correct Answer: Azeotropes obey Raoult’s law at all temperature

_____________ is the temperature at which a gas-vapor mixture becomes saturated, when cooled at constant total pressure out of contact with a liquid ?

A Dew point

B Bubble point

C Dry bulb temperature

D Wet bulb temperature

Review Detailed Answer

Correct Answer: Dew point

For absorbers, high pressure drop results in___________________?

A Increased efficiency

B Decreased efficiency

C High operating cost

D Better gas liquid contact

Review Detailed Answer

Correct Answer: High operating cost

The binary diffusivity in gases at atmospheric conditions is about ___________________?

A 10-9 cm/sec

B 10-1 cm2/sec

C 10-3 sec/cm

D 10-4 cm2/sec2

Review Detailed Answer

Correct Answer: 10-1 cm2/sec

Occurrence of ‘case hardening’ during drying of a high moisture solid cake _______________ the drying rate?

A Increases

B Decreases

C Does not affect

D Exponentially increases

Review Detailed Answer

Correct Answer: Decreases

Refractory bricks are usually dried in a ________________ dryer?

A Tray

B Tunnel

C Conveyor

D Festoon

Review Detailed Answer

Correct Answer: Tunnel

The most common packing used in industrial operations is _______________ rings?

A Raschig

B Lessing

C Cross-partition

D Single spiral

Review Detailed Answer

Correct Answer: Raschig

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Chemical Engineering Mcqs 9594 MCQs [All-Courses]

All Topics 9594

All Topics 9594

If xD = overhead product molal composition and RD = reflux ratio, then slope and intercept of the operating line for rectifying section are respectively ?

Hydrogenation of oil is carried out in a/an _______________ in Vanaspati manufacturing plant?

Fenske equation determines the __________________?

Pick out the wrong statement ?

_____________ is the temperature at which a gas-vapor mixture becomes saturated, when cooled at constant total pressure out of contact with a liquid ?

For absorbers, high pressure drop results in___________________?

The binary diffusivity in gases at atmospheric conditions is about ___________________?

Occurrence of ‘case hardening’ during drying of a high moisture solid cake _______________ the drying rate?

Refractory bricks are usually dried in a ________________ dryer?

The most common packing used in industrial operations is _______________ rings?