The Lewis number is the ratio of
A.thermal diffusivity to mass diffusivity
B.mass diffusivity to thermal diffusivity
C.mass diffusivity to momentum diffusivity
D.momentum diffusivity to thermal diffusivity
A.thermal diffusivity to mass diffusivity
B.mass diffusivity to thermal diffusivity
C.mass diffusivity to momentum diffusivity
D.momentum diffusivity to thermal diffusivity
A.first-order system
B.multiple first-order system
C.underdamped second-order system
D.overdamped second-order system
A.it does not contain P-P bonds
B.it does not contain tetrahedral P4 molecules
C.it does not catch fire in air even upto 200?C
D.it has a polymeric structure
A.nucleus
B.outer nuclear region
C.outermost shell
D.innermost shell
A.J/s
B.J
C.W
D.N
A.Shell side
B.Tube side
C.Either of (A) and (B) above
D.None of the above
A.result in an increased pressure drop
B.result in decreased pressure drop
C.not affect the pressure drop
A.m/s
B.m2/s
C.m3/s
D.kmol/(m2-s)
A.remains unaffected with change in temperature
B.decreases with increase in temperature
C.increases with increase in temperature
D.increases linearly with increase in temperature.