White cast iron is produced
A.when molten pig iron is allowed to cool gradually
B.when molten pig iron is chilled suddenly
C.when grey cast iron is subjected to slow prolonged heating
D.none of the above
Category: Chemical Engineering Mcqs
Crude petroleum distillation is carried out at pressure
A.slightly below atmospheric pressure
B.slightly above atmospheric pressure
C.above 5 atm
D.above 15 atm
For flow of a gas through a given capillary according to Poiseuilles law the permeability
A.remains unaffected with change in temperature
B.increases with increase in temperature
C.decreases with increase in temperature
D.varies as the square root of temperature
For perfect mixed flow the dispersion number must be
A.zero
B.less than 2100
C.less than 2
D.infinity
The device which may be used for measuring small differences pressure is
A.U-tube manometer
B.inclined manometer
C.mercury barometer
D.hydrometer
DBA = DAB, in case of
A.Stagnet diffusion
B.Equimolar counter diffusion
C.Either of (A) and (B) above
D.None of the above
Austenitic stainless steel is characterized by
A.a body-centred cubic crystal structure
B.a face-centred cubic crystal structure
C.a simple hexagonal crystal structure
D.none of the above
The surface tension of the nuclear fluid is
A.more than that of water but less than that of mercury
B.less than that of water
C.much more than that of any liquid
D.approximately equal to that of turpentine
The material used for absorbing neutrons in a nuclear reactor is
A.lead
B.uranium
C.zinc
D.cadmium
Flow rate of sludge is commonly determined by
A.orifice meter
B.venturi meter
C.open weir
D.rotameter
