Related Questions

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
Extraction of pencillin employs a __________ extraction coloumn.
A Centrifugal
B Packed
C Plate
D None of these
With increase in temperature, the rate of extraction in leaching (solid-liquid extraction system)
A Increases
B Decreases
C Remains unaffected
D Increases Linearly
Which of the following is used for calcination of limestone and dolomite in industrial practice?
A Fluidised bed reactor
B Moving bed reactor
C Fixed bed reactor
D None of these
Tar dolomite bricks are used in the
A Basic Bessemer converter
B Basic open hearth furnace
C Electric furnaces
D All of the above
Dolomite bricks have good resistance to attack by
A Molten steel
B Iron oxide
C Lime slag
D None of these
Tar bonded dolomite bricks
A Are stored under controlled temperature & humidity to avoid hydration
B Are used in outer lining of L.D. converters
C Have poorer hydration resistance than pitch bonded bricks
D All of the above
Dolomite is a/an
A Sedimentary rock
B Plutonic rock
C Igneous rock
D Metamorphic rock
Main constituent of dolomite is
A CaCO3
B MgCO3
C K2CO3
D Na2CO3
An oxidising process used for aluminium and magnesium articles is called
A Galvanizing
B Anodizing
C Parkerising
D Sherardizing

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