For middle distillate production FCC reactors are usually operated between
A.175? and 185?C
B.900? and 950?C
C.100? and 110?C
D.470? and 490?C
Category: Chemical Engineering Mcqs
The quantity of chlorine in ppm required to satisfactorily chlorinate sewage is usually
A.125-150
B.95-120
C.60-90
D.0-25
One amu is equivalent to
A.931 J
B.931 eV
C.931 MeV
D.9.31 MeV
Which of the following petroleum products has minimum C/H ration (by weight)?
A.Gasoline
B.Aviation turbine fuel
C.High speed diesel oil
D.Furnace oil
The presence of oleophilic impurities in the crude petroleum causes
A.corrosion in the crude distillation unit column overhead system
B.erosion of crude petroleum pumps
C.fouling of heat transfer surfaces
D.all of the above
Corrosion resisting chromium – nickel steels contain
A.16-24% Cr 7-12% Ni 1.5-2.0 Mn
B.35-36% Cr 1.5-2.0% Ni 8-14% Mn
C.7-12% Cr 1.5-2.0% Ni 16-24 Mn
D.1.5-2.0% Cr 7-12% Ni 16-24% Mn
Which one of the following cannot be unit of thermal conductivity?
A.Watt / m2 K
B.Kcal/m-hr?C
C.BTU/ft-h?F
D.cal/c,-sec?K
E.CHU/ft-hr?C
The reaction CH2 = CH2 + Br2 ?? CH2 Br ?CH2Br is
A.a substitution reaction
B.an addition reaction
C.a molecular rearrangement
D.a photochemical reaction
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
