Non-dimensional number generally involved in case of heat transfer from horizontal cylinder by natural convection is
A.Reynolds number
B.Nusselt number
C.Prandtl number
D.Grashof’s numbr
E.(B), (C) and (D) above
Category: Chemical Engineering Mcqs
Ammonium carbamate is formed by reacting ammonia and carbon dioxide at 180 atm and 185?C. The reaction is
A.endothermic
B.exthermic
C.reversible
D.catalytic
High purity oxygen is used for
A.welding
B.cutting of metals
C.medicinal purposes
D.all of the above
Elongation of a rod when heated
A.Is proportional to length
B.Is proportional to original length
C.Is inversely proportional to original length
D.Is inversely proportional to linear strain
E.Does not depend on its length
The ration of the percentage carbon obtained in the ultimate analysis and the per cent fixed carbon obtained in the proximate analysis is always
A.one
B.less than one
C.greater than one
A vessel has two compartments A and B containing H2 and O2 respectively both at one atmospheric pressure. If the wall separating the two compartments is removed
A.the pressure will remain unchanged
B.the pressure will increase in A
C.the pressure will increase in B
D.the pressure will increase both in A and B
The complete and perfect combustion of a hydrocarbon fuel yields
A.carbon monoside gas and water vapour
B.carbon dioxide gas only
C.water vapour only
D.both carbon dioside gas and water vapour
In the electrostatic precipitator
A.high conductivity material is more easily collected
B.low conductivity material is more easily collected
C.electrical conductivity of material is not an important factor
D.none of the above
Which of the following types of crude petroleum is the most suitable for the manufacture of bitumen?
A.Naphthenic
B.intermediate
C.Paraffinic
D.Bitumen cannot be manufactured from crude petroleum
