Chemical Engineering Archives

Chemical Engineering

Prepare with the best Chemical Engineering MCQs with answers and detailed explanations for exams and job tests. Our collection covers key topics such as chemical process calculations, thermodynamics, fluid mechanics, heat transfer, mass transfer, reaction engineering, instrumentation, and plant design. These Chemical Engineering multiple-choice questions are ideal for students, competitive exam aspirants, and professionals preparing for NTS, PPSC, FPSC, PEC exams, GATE, university entry tests, and job interviews. Practice online with updated Chemical Engineering MCQs to strengthen your concepts and improve technical problem-solving skills.

4411. Column support for the roof of cylindrical storage tank must be provided for

small diameter tanks.

large diameter tanks.

small diameter tall tanks.

all tanks irrespective of their heights and diameters.

✅ The correct answer is option B.

4412. In a distillation column, the minimum residence time for liquid in the downspout is about __________ seconds.

180

✅ The correct answer is option B.

4413. In a shell and tube heat exchanger, the clearance of the tube is generally

not less than one-fourth of the tube diameter or 3/16″.

more than the tube diameter.

equal to the tube diameter.

more in case of triangular pitch as compared to the square pitch tube layout.

✅ The correct answer is option A.

4414. The ends of a cylinderical vessel can be closed by a head, which can be one of the four shapes. For the same thickness, choose the one which can withstand the highest pressure.

Flat plate

Hemispherical

Torispherical

Ellipsoidal

✅ The correct answer is option D.

4415. Brass valves are usually made for pipe sizes __________ inches.

≤1

≤2

>2.5

>3.5

✅ The correct answer is option B.

4416. The necessary wall thickness for a metallic storage vessel is a function of the

ultimate tensile strength (or yield point) of the material and operating temperature.

operating pressure and welding/joint efficiency.

diameter of the vessel.

all (a); (b) and (c).

✅ The correct answer is option D.

4417. The circumferential (hoop) stress in a thin walled cylinderical vessel under internal pressure is

pd/2t

pd/4t

pd/t

pd/3t

✅ The correct answer is option A.

4418. for fully open globe value may be around

300

✅ The correct answer is option D.

4419. In packed towers provided with saddle packing, liquid redistributors are positioned at every __________ times column diameter or 6 metres whichever is less.

2-Mar

5-Aug

Oct-15

20-25

✅ The correct answer is option B.

4420. In a __________ rivetted joint, the number of rivets decreases from the innermost row to the outermost row.

chain

diamond

zig-zag

none of these

✅ The correct answer is option B.