Question

5. A child wanted to separate the minture or dyes constituting o sumple of ink. He marked a line and
kept a drop of ink on filter paper and placed the filter paper in a glass containing water as shown in
the figure
The filter paper will removed when the water moved near the top of the filter paper.
a) What would you expect to see, it mk contains three different colored components?
b) Name the technique used by the child.
c) Sugest one more application of this technique,
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Answer 1

Explanation:

The colour component which is more soluble in water dissolves first, rises faster and produces a colour band (spot) on the paper at a higher position. The less soluble colour components dissolve a little later, rise slower and form coloured bands at lower heights. In this way, three different bands will be observed.

Chromatography

To separate the pigments present in chlorophyll.

Answer 2

a) yes ink seperates into different colours

b) chromatography

c)Chromatography techniques are also widely used in purification of plasma proteins