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WorksheetsChromatography-2
Total questions: 10
Worksheet time: 3mins
The retention factor is used
to zero the chromatography scale
to identify unknown compounds in a sample
to retain solvent
as a starting tool for chromatography
Thin layer chromatography is
partition chromatography
electrical mobility of ionic species
adsorption chromatography
none of the above
Ion-Exchange chromatography:
separate and analyze compounds that can be vaporized without decomposition
Also known as Liquid-Solid Chromatography
Separation based on partition coefficient between 2 immiscible liquids
Materials used are either cation or anion resins
Which of the following is correct about chromatography?
It separates those solutes that dissolve in the same solvent.
It separates those solutes that dissolve in different solvents.
It separates a solute that dissolves in a solid solvent.
It separates gaseous solutes from liquid solvents.
The presence of more than one spot on the TLC plate shows that____
the Rf value is higher than it should be
the solvent used was too dilute
impurities are present
too much solvent was used
chromatography separates the mixture of dyes on the basis of their ---------------------------
gravity
solubility
density
boiling point
Chromatography separates a mixture of...
Solutes
Solutions
Solvents
compounds
A pure substance shows ------------------ spot on chromatogram
0
1
2
3
The Rf value for the red component is
0.3
0.7
10
7
Dyes in water soluble markers may be separated by means of..
crystallization
sublimation
chromatography
sedimentation
