Related Questions

Solvent used in the Udex (glycol) extraction process for removal of light aromatics from cracked naphtha is
A Propane
B Diethylene glycol
C Aqueous solution (10% water) of diethylene glycol
D Methyl ethyl ketone (MEK)
The vapour pressure of a solution (made by dissolving a solute in a solvent) is __________ that of the pure solvent.
A Less than
B More than
C Equal to
D Either more or less; depends on the solvent
Selectivity of the solvent used in solvent extraction should be
A 1
B > 1
C 0
Solvent extraction is the terminology applied to the liquid-liquid extraction, which is preferred for the separation of the components of liquids, when
A Extracting solvent is cheaply & abundantly available
B One of the liquid components is heat sensitive
C Viscosity of liquid components is very high
D One of the liquid components has very high affinity towards the solvent
Solution made by dissolving equimolar amounts of different solutes in the same amount of a given solvent will have the
A Same elevation in boiling point
B Different elevation in boiling point
C Elevation in boiling point in the ratio of their molecular weights
D None of these
Dissolving a solute in a solvent does not change its
A Specific heat
B Vapour pressure
C Viscosity
D None of these
In petroleum refining, the process used for conversion of hydrocarbons to aromatics is
A Catalytic cracking
B Catalytic reforming
C Hydrotreating
D Alkylation
Presence of predominantly large quantity of aromatics (polynuclear) is not desirable in aviation fuel, because it has
A High pour point and low smoke point
B Low viscosity index
C High self-ingnition temperature
D All of the above
Aromatics are desired constituents of
A Lubricating oil
B Diesel
C Kerosene
D Petrol
Aromatics have the highes __________ of all the hydrocarbons of same carbon atoms.
A Smoke point
B Octane number
C Cetane number
D Viscosity

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