Chemical Engineering Quiz Chemical Engineering Quiz 111 Welcome to Shaheen Leader Academy We expect 100% result. Click on Start Button. Your time is Ended. Thanks Chemical Engineering Chemical Engineering Quiz 1 / 25 Unsteady non uniform flow is represented by flow through a :- Long pipe at increasing rate Long pipe at constant rate expanding tube at increasing rate 2 / 25 Why is the conductivity of a nanowire much less than that of corresponding bulk material ;- None of them Due to greater mean free path Due to scattering from wire boundaries 3 / 25 The head loss due to sudden contraction is proportional to:- Velocity Turbulence Velocity head 4 / 25 Which equation is valid for laminar flow of a fluid through a packed bed:- Kozney Kerman equation Fanning equation Hagen Poiseuille equation 5 / 25 Which is a potential environmental application of  nanotechnology :- Oil spill cleanup Deforestation Carbon emission 6 / 25 Presence of silicon in steel ________ the blow holes formation tendency in casting :- Decrease Not change Increase 7 / 25 Transition from laminar flow to turbulent flow is aided by the:- All of them Vibration Surface roughness Pressure gradient 8 / 25 __________ has the minimum compressibility:- Air at room temperature Oxygen at room temperature Water at room temperature 9 / 25 The flow of a liquid through tapering pipe at a constant rate is an example of __________________ flow:- Steady nonuniform Steady uniform Unsteady uniform 10 / 25 Which is not a key ingredient of Wet etching process :- Neutralizer Oxidizer Acid 11 / 25 Gradually varied flow is:- Non Steady uniform Non Steady non uniform Steady non uniform Steady uniform 12 / 25 Fluid flow at increasing rate through a diverging pipe is an example of __________ flow;- Non steady , non uniform Steady uniform Non steady uniform 13 / 25 Fluid flow through a packed bed is represented by the ____________ equation:- Fanning Both Ergun's None 14 / 25 Propeller type centrifugal pumps are most suitable for:- Low capacity at high heads High capacity at low heads High capacity at high heads 15 / 25 Boundary layer separation is caused by the reduction of pressure gradient to zero:- False True 16 / 25 The compressible flow is assumed to be:- Isentropic Adiabatic Both a, b 17 / 25 Physical and chemical vapor deposition employ different processes ;- True False 18 / 25 Ceramic recuperators are made of ;- Silicon carbide Fireclay bricks Calcium carbide 19 / 25 80% less than 200 mesh size particles are called ;- Grit Powder Smoke 20 / 25 The form drag is dependent upon the occurrence of a wake:- False True 21 / 25 The unit of specific weight is:- N = m N = m³ N= m² 22 / 25 What is the physical significance of Reynold's number :- Unit less quantity No slip boundary condition Dimensionless quantity 23 / 25 Which one is not a dimensionless parameter:- None Euler number Specific gravity Both 24 / 25 Superduty fireclay bricks corresponds to a pyrometric cone equivalent of 26-28: False True 25 / 25 ___________ plants emits large amount of SO2  as an air pollutant:- Chlor alkali Nitric acid Sulphuric acid Your score is Restart quiz Subscribe our Channel Here
