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.

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6074. In case of laminar flow of fluid through a circular pipe, the

Shear stress over the cross-section is proportional to the distance from the surface of the pipe
Surface of velocity distribution is a paraboloid of revolution, whose volume equals half the volume of circumscribing cylinder
Velocity profile varies hyperbolically and the shear stress remains constant over the cross-section
Average flow occurs at a radial distance of 0.5 r from the centre of the pipe (r = pipe radius)
✅ The correct answer is option B.

6075. Cavitation can be prevented by

Suitably designing the pump
Maintaining the suction head sufficiently greater than the vapour pressure
Maintaining suction head = developed head
Maintaining suction head lower than the vapour pressure
✅ The correct answer is option B.