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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 function of manholes provided in the shell of a distillation column is to __________________?

A Keep a check on the liquid gradient over the plate by direct visual observation

B Give access to the individual trays for cleaning, maintenance and installation

C Guard against foaming & entrainment by dumping antifoaming agent through it

D All A., B. and C.

Review Detailed Answer

Correct Answer: Give access to the individual trays for cleaning, maintenance and installation

Pick out the wrong statement about the design of sieve plate column and the bubble cap column ?

A The downcomer design and the residence time in the downcomer is almost same for sieve

B Weir length for a bubble cap plate is the same as that for the sieve plate

C Weir height for a bubble cap plate column is the same as that for a sieve plate column

D Weir height in case of a bubble cap plate ranges from 50 to 150 mm and is higher than the

Review Detailed Answer

Correct Answer: Weir height for a bubble cap plate column is the same as that for a sieve plate column

Back-trapping in a distillation column results due to_________________?

A Low gas velocity

B High gas velocity

C Excessive liquid gradient over the tray

D Low reflux ratio

Review Detailed Answer

Correct Answer: Excessive liquid gradient over the tray

For high pressure process equipments/vessels, the connected nozzle should be____________________?

A Welded

B Screwed

C Flanged

D Brazed

Review Detailed Answer

Correct Answer: Flanged

Generally, as the length of the liquid path on a tray is increased beyond 5 ft, the overall column efficiency___________________?

A Increases

B Decreases

C Remain same

D May increase or decrease depending upon the plate spacing

Review Detailed Answer

Correct Answer: Increases

Of the pressure vessels, with same thickness but different diameters, which one withstands higher pressure ?

A Larger dia vessel

B Smaller dia vessel

C Larger dia long vessel

D Strength of the vessel is same irrespective of the diameter

Review Detailed Answer

Correct Answer: Smaller dia vessel

For a cylindrical vessel of moderate height, the weld joint efficiency for joints parallel to the cylindrical axis is given as 1.0; while for joints along the girth (circumference) it is given as 0.8. In calculating the shell wall thickness using code formula for an internally pressurised cylindrical vessel, what value of weld joint efficiency should be used ?

A 0.8

B 0.9

C 1.0

D (0.8)0.5

Review Detailed Answer

Correct Answer: 0.8

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Chemical Engineering Mcqs 9594 MCQs [All-Courses]

All Topics 9594

All Topics 9594

The function of manholes provided in the shell of a distillation column is to __________________?

Pick out the wrong statement about the design of sieve plate column and the bubble cap column ?

Back-trapping in a distillation column results due to_________________?

For high pressure process equipments/vessels, the connected nozzle should be____________________?

Generally, as the length of the liquid path on a tray is increased beyond 5 ft, the overall column efficiency___________________?

Of the pressure vessels, with same thickness but different diameters, which one withstands higher pressure ?