The nature of flow of a fluid inside a tube i.e., whether it is turbulent or laminar, is ascertained by
A.Flow velocity
B.Tube size
C.Surface conditions
D.Viscosity of fluid
E.Reynolds number
Category: Chemical Engineering Mcqs
Compared to mercury electrolytic cells diaphragm electrolytic cells
A.consume less power per ton of chlorine produced
B.require less initial investment for the same capacity
C.can produce 70% NaOH solution
D.uses saturated NaCI solution with solid NaCI make-up
Which of the following properties of white phosphorus are common to red phosphorus?
A.It is soluble in carbon disulphide
B.It phosphoresces in air
C.It reacts with hot caustic soda solution to give phosphine
D.It burns when heated in air
A first-order reaction is to be treated in a series of two mixed reactors. The total volume of the two reactors is
A.minimum when the reactors are of defferent sizes
B.maximum when the reactors are equal in size
C.minimum when the reactors are equal in size.
At all wavelengths and temperatures the monochromatic emissivity of a white body is equal to
A.Zero
B.0.1 to 0.5
C.0.5
D.0.5 to 1
E.Unity
Which of the following is a component of working capital investment?
A.Process equipment
B.Maintenance and repair inventory
C.Utilities plants
D.Depreciation
Imperfect gases are those
A.which contain impurities
B.which do not obey Charles and Boyles law
C.whose molecules are not spherical
D.whose molecules cannot be regarded as point masses
A mercury (? = 13.6 ?water) barometer has a column height of 29 in. The barometric pressure in psi is
A.14.696
B.14.24
C.0.23
D.not determinable from data given
Above atmospheric pressure the specific heat of a gas at constant pressure (Cp)
A.increases with increase in pressure
B.decreases with increase in pressure
C.remains unaffected with change in pressure
D.increases first and then decreases with increase in pressure
In an ideal mixed reactor at steady-state
A.the composition throughout the reactor remains same
B.the exit stream has the same composition as the fluid within the reactor
C.the space-time is equivalent to holding time for constant density systems
D.all of these answers.
