Formation of fog is due to
A.Low pressure
B.High pressure
C.Night showers
D.Humidity
E.Temperature fall of atmosphere
Category: Chemical Engineering Mcqs
In the UDEX process for the extraction of armatics from reformed naphtha the solvent used is
A.liquid sulphur dioxide
B.a mixture of diethylene glycol and water
C.a mixture of methyl ethyl ketone and benzene
D.iron
At minimum reflux ratio the fixed cost of a distillation column is
A.minimum number of plates
B.infinite
C.optimum
One kWh is equal to
A.3.6 x 108 J
B.3.6 x 106 J
C.3.6 x 107 J
D.3.6 x 105 J
The density of water is maximum at
A.20?C
B.4?C
C.0?C
D.? 4?C
E.Absolute zero
The absolute viscosity of a fluid is a property which
A.is a function of the motion of the fluid
B.is independent of pressure and temperature
C.is a function of the shear stress in the fluid.
Wood at its kindling temperature will
A.burn momentarily then go out
B.not burn at all
C.burn continuously
A correction of LMTD is necessary in case of
A.Parallel flow heat exchanger
B.Counter current heat exchanger
C.Cross flow heat exchanger
D.All of the above
E.None of the above
For glass wool the thermal conductivity varies from sample to sample because of variations in
A.Structure
B.Composition
C.Density
D.Porosity
E.All of the above
