The ?-particle is identical with
A.a helium atom
B.a doubly charged helium ion
C.proton
D.fast moving neutron
Category: Chemical Engineering Mcqs
Since the mass defect of the helium nucleus is 5.045 x 10-26 gm its binding energy must be
A.5.045 x 10-26 erg
B.4.54 x 10-5 erg
C.4.54 x 10-5 J
D.5.045 x 10-26 J
Select the correct expression
A.Profit = revenue – operating cost
B.Profit = revenue – fixed cost
C.Profit = revenue – total cost
D.Profit = revenue – book value
Which dimensionless number indicates the relative strength of the buoyant to viscous forces?
A.Prandtl number
B.Grashoff number
C.Froude’s number
D.Weber number
For ? = 2.49 Poise sp.gr = 0.83 v in Stokes is
A.2.07
B.0.3
C.3
D.3 x 10-3
Clay tratment is generally employed for
A.the removal of olefins and diolefins from cracked gases/liquid streams
B.the improvement of colour and odour
C.the oxidation stability of lube base stocks
D.all of the above
Urea is formed in a low-pressure stripping operation by dehydration of
A.ammonium bicarbonate
B.ammonium carbomate
C.biuret
D.ammonium nitrate
Generalized compressibility factor chart is a plot of
A.compressibility factor versus reduced temperature with reduced pressure as parameter
B.compressibility factor versus reduced pressure with reduced temperature as parameter
C.compressibility factor versus pressure with absolute temperature as parameter
D.compressibility factor versus absolute temperature with pressure as parameter
A balanced chemical equation is in accordance with
A.law of gaseous volumes
B.law of Avogadro
C.law of constant proportions
D.law of conservation of mass
Triple superphosphate is made by reacting phosphate rock with orthophosphoric acid. It is represented by
A.CaH4(PO4)2
B.CaH2(PO4)2
C.Ca3H4(PO4)2
D.Ca3(PO4)2
