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Define about the Paper Chromatography?
Paper chromatography is a very useful technique for separating mixtures of metal ions, anions, amino acids, sugars, dyes, drugs, etc. The chief factor responsible for separation of ingredients by paper chromatography is partition. Any paper used should have space in the interstices. It is in the interstices, that molecules of one phase is embedded. Hence paper like Whatman No. l, 3 are used.
The paper functions as an inert support when the mobile phase moves along the paper, the substances applied as a spot on the paper are partitioned between the mobile solvent and molecules of the static solvent embedded in the interstices of the paper. As the partition coefficient may be different for different substances, the rates of migration of substances along the paper are also different and thus separation takes place.
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From an ecological point of view, species richness alone has limited value. More meaningful measures use the number of different species in a given area (species richness) as well
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How to culture mould plant s Use either sterile dishes with potato slices or gelatin as those ready for the experiments on bacteria. Transfer mould from every of the sources in
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please give us this phylem''s example...
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