Class 11Chemistry3 Organic Chemistry: Purification and CharacterisationPurification of Organic Compounds
MediumWhat is meant by the term "chromatography"?
(N/A) Chromatography is a collective term used for a family of laboratory techniques for the separation of mixtures.
The term is derived from Greek words 'chroma' meaning 'colour' and 'graphein' meaning 'to write'.
Chromatographic techniques are based on the principle that different components of a mixture are adsorbed to different extents on a stationary phase.
There are several chromatographic techniques such as paper chromatography,column chromatography,gas chromatography,etc.
The term is derived from Greek words 'chroma' meaning 'colour' and 'graphein' meaning 'to write'.
Chromatographic techniques are based on the principle that different components of a mixture are adsorbed to different extents on a stationary phase.
There are several chromatographic techniques such as paper chromatography,column chromatography,gas chromatography,etc.
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Similar Questions
Given below are two statements $:$
Statement $(I) :$ In partition chromatography,stationary phase is a thin film of liquid present on an inert support.
Statement $(II) :$ In paper chromatography,the material of the paper acts as a stationary phase.
In the light of the above statements,choose the correct answer from the options given below $:$
Statement $(I) :$ In partition chromatography,stationary phase is a thin film of liquid present on an inert support.
Statement $(II) :$ In paper chromatography,the material of the paper acts as a stationary phase.
In the light of the above statements,choose the correct answer from the options given below $:$
Using column chromatography,a mixture of two compounds '$A$' and '$B$' was separated. '$A$' eluted first,this indicates '$B$' has
Match column $-I$ and column $-II$ with the correct relation:
Column $-I$ Column $-II$ $(i)$ Liquid boiled at low temperature $(a)$ Fractional distillation $(ii)$ Glycerol from lye $(b)$ Simple distillation $(iii)$ The liquid with lower boiling point condenses first $(c)$ Steam distillation $(iv)$ The liquid with higher boiling point condenses first $(d)$ Distillation under reduced pressure
| Column $-I$ | Column $-II$ |
| $(i)$ Liquid boiled at low temperature | $(a)$ Fractional distillation |
| $(ii)$ Glycerol from lye | $(b)$ Simple distillation |
| $(iii)$ The liquid with lower boiling point condenses first | $(c)$ Steam distillation |
| $(iv)$ The liquid with higher boiling point condenses first | $(d)$ Distillation under reduced pressure |
Easy
View SolutionHow will you separate a mixture of two organic compounds which have different solubilities in the same solvent?
Easy
View SolutionState whether the following statements are True or False:
$(i)$ The purification of a solid is done by crystallisation.
$(ii)$ Crystallisation purifies the solid and distillation purifies the liquid.
$(iii)$ $A$ liquid is purified by sublimation.
$(iv)$ To separate a mixture of ammonium chloride and sodium chloride,the distillation method is applied.
$(i)$ The purification of a solid is done by crystallisation.
$(ii)$ Crystallisation purifies the solid and distillation purifies the liquid.
$(iii)$ $A$ liquid is purified by sublimation.
$(iv)$ To separate a mixture of ammonium chloride and sodium chloride,the distillation method is applied.
Medium
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