6271. A floating/submerged body is always stable, if its centre of gravity
Lies above its centre of buoyancy
And centre of buoyancy coincide
Lies below its centre of buoyancy
Lies above its meta centre
✅ The correct answer is option C.
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.
6272. Which law is followed by the velocity distribution in the turbulent boundary layer?
Parabolic law
Linear law
Logarithmic law
None of these
✅ The correct answer is option C.
6273. For flow of fluids through packed bed, the superficial velocity is
Less than the average velocity through channels
More than the average velocity through channels
Dependent on the pressure drop across the bed
Same as the average velocity through channels
✅ The correct answer is option A.
6274. A venturimeter measures the
Velocity head
Pressure
Point velocity
None of these
✅ The correct answer is option D.
6275. The hydrodynamic and thermal boundary layers will merge, when
Prandtl number is one
Schmidt number tends to infinity
Nusselt number tends to infinity
Archimedes number is greater than 10000
✅ The correct answer is option A.
6276. Hydraulic diameter for non-circular ducts is equal to __________ times the area of flow divided by the perimeter.
Two
Three
Four
Eight
✅ The correct answer is option C.
6277. Select the correct practical example of steady non-uniform flow.
Motion of water around a ship in a lake
Motion of river around bridge piers
Steadily decreasing flow through a reducing section
Steadily increasing flow through a pipe
✅ The correct answer is option C.
6278. Efficiency of power transmission (η) through a circular pipe is given by (ht – hf)/ht, which has a maximum value of __________ percent.
:03:00
50
66.6
88.8
✅ The correct answer is option C.
6279. Which of the following is not a dimension-less parameter?
Euler number
Specific gravity
Fanning friction factor
None of these
✅ The correct answer is option D.
6280. Ratio of inertial forces to surface tension forces is called the __________ number.
Euler
Froude
Mach
Weber
✅ The correct answer is option D.