Stainless steel in addition to iron and carbon contains
A.sluminium
B.zinc
C.lead
D.chromium
Category: Chemical Engineering Mcqs
When metallic surfaces are oxidized the emissivity
A.Increases
B.Decreases
C.Does not change
D.Depends on the temperature
E.Depends on other factors
In steel carbon is
A.present wholly in the combined form
B.mostly present in the free state as graphite
C.not desirable
D.none of the above
The internal energy of an ideal gas depends on
A.its pressure only
B.its volume only
C.its temperature only
D.the size of its molecules only
Two capillary tubes of different diameter are dipped in water. The rise of water is
A.greater in the tube of smaller diameter
B.greater in the tube of larger diameter
C.same in both tubes
D.zero in both tubes
Accuracy of an instrument is judged in terms of
A.drift
B.dead zone
C.static error
Peclet number (NPe) for mass transfer is defined as
A.NRe/NSc
B.NReNSc
C.NSc/NRe
D.NShNSc
The chemical formula of othophosphoric acid is
A.H3PO3
B.H3PO4
C.H4P2O7
D.HPO3
The unit of thermal conductivity in S.I. units is
A.W/m-hr-?K
B.W/m-hr?C
C.W/m?K
D.KJ/m-hr?C
E.KJ/m-hr-?K
