The process of heat transfer during the re-entry of satellites and missiles, at very high speeds, into the earth’s atmosphere is known as
A.Radiation
B.Viscous dissipation
C.Triple flow
D.Ablation
E.None of the above
Category: Chemical Engineering Mcqs
The translational kinetic energy of molecules of an ideal gas is
A.directly proportional to its absolute temperature
B.directly proportional to square root of its absolute temperature
C.directly proportional to square of its absolute temperature
D.independent of its temperature
Septic tanks are primarily used for
A.the aerobic decomposition of deposited sweage solids
B.separation of deposited solids
C.anaerobic decomposition of deposited solids
D.separation of oil and grease scums.
The flash process is carried out by
A.reducing the pressure on the feed stream
B.cooling the feed at constant pressure
C.increasing the pressure on the feed steam
D.none of the above
One amu is equal to
A.1.66 x 10-24 kg
B.1.66 x 10-21 kg
C.1.66 x 10-27 kg
D.1.66 x 10-26 kg
An example of Newtonian fluid is
A.non-colloidal solution
B.sewage sludge
C.rubber latex
D.quicksand
NPK fertilizer is a
A.nitrogenous fertilizer
B.phosphatic fertilizer
C.potassic fertilizer
D.mixed fertilizer
Which of the following statements violates the postulates of the kinetic theory of gases?
A.Gases consist of a large number of tiny particles
B.All the molecules are in a state of rapid motion
C.The molecules in a gas remain at rest
D.The pressure exerted by the gas results from the impact of the molecules on the walls of the containing vessel
Relative volatility ? for a binary system is a measure of separability by distillation. If ? = 1 the separation by distillation is
A.maximum possible
B.least possible
C.impossible
D.optimum possible
