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प्रश्न
Give a scientific reason.
In chromatography, the ingredients of a mixture rise up to limited height water rises up to the upper end of the paper.
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उत्तर
Chromatography is a separation technique used to separate the different components in a liquid mixture. Separation of substances by chromatography is based on two properties of the substance:
- the solubility of the substance in the solvent that moves up.
- the ability of the substance to stick to the stationary filter paper.
These properties are different for different substances and are mutually opposite to each other. It is the reason why all the components of the mixture rise up to a limited height when the water rises up to the upper end of the paper.
संबंधित प्रश्न
Which separation technique will you apply for the separation of the following?
Different pigments from an extract of flower petals.
What is chromatography?
Name the different types of chromatographic techniques.
Give names of two materials used as stationary phase in chromatography.
Define the Stationary phase.
The principle involved in paper chromatography is ______.
The separation of two coloured substances was done by paper chromatography. The distances travelled by solvent front, substance A and substance B from the baseline are 3.25 cm, 2.08 cm and 1.05 cm respectively. The ratio of Rf values of A to B is ______.
Which one of the following techniques is not used to spot components of a mixture separated on thin layer chromatographic plate?
In chromatography, which of the following statement is INCORRECT for Rf?
In chromatography, the mobile phase is usually ______.
