Acid
Solvent extraction
Alkali
Clay
✅ The correct answer is option B.
Chemical Engineering MCQs
It is desired to concentrate a 20% salt solution (20 kg of salt in 100 kg of solution) to a 30% salt solution in an evaporator. Consider a feed of 300 kg/min at 30°C. The boiling point of the solution is 110°C, the latent heat of vaporisation is 2100 kJ/kg and the specific heat of the solution is 4 kJ/kg.K. The rate at which the heat has to be supplied in (kJ/min) to the evaporator is
3.06 x l0⁵
6.12 x 10⁵
7.24 x 10⁵
9.08 x 10⁵
✅ The correct answer is option A.
Multiple effect evaporators are commonly used in the manufacture of P. Paper Q. Superphosphate R. Sugar S. Fats
P and Q
P and R
P and S
R and S
✅ The correct answer is option C.
Polymerisation
produces i-octane from cracked gases containing i-butane and butene.
causes olefins to combine with each other.
causes aromatics to combine with each other.
is aimed at producing lubricating oil.
✅ The correct answer is option B.
Naphthenic acid is a/an __________ compound.
sulphur
nitrogen
oxygen
none of these
✅ The correct answer is option C.
Flue gas from the heating chamber of byproduct coke ovens is removed by
Forced draft fan
Induced draft fan
Steam ejector
Natural draft
✅ The correct answer is option D.
Overall thermal resistance for conductive heat transfer through a series of flat resistances is equal to the
Maximum resistance in the series
Sum of all resistances
Average of all resistances
Minimum resistance presents in the series
✅ The correct answer is option B.
The purpose of providing expansion bellows in the shell of tubular exchanger is to
Increase the heating load
Impart structural strength
Account for the uneven expansion of shell and tube bundles
Facilitate increase of shell length, if needed
✅ The correct answer is option C.
Visbreaking
uses natural gas as feed.
is carried out at atmospheric pressure.
produces fuel oil of lower viscosity.
produces gasoline only.
✅ The correct answer is option C.
Liquefied Petroleum Gas (LPG) in domestic use cylinders is in the liquid form. The density of LPG in liquid form is about __________ of that of water (i.e. 1 gm/c.c).
one fourth
one third
half
one eighth
✅ The correct answer is option C.