Priya wanted to separate mixture of dyes constituting a sample of ink. She put a drop of Ink on filter paper & placed the filter paper in glass containing water. The filter paper was removed when the water moved near the top.
1. What would you observe on filter paper, if the ink contains 3 dyes in it?
2. Name the technique used by Priya.
3. State the principal of technique.
4. Suggest two more applications of this technique.
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Explanation:
1. Priya will observe layers of all 3 dyes the dye with high density will appear first then second then third
2. this technique is known as chromatography
3. the principle of this technique is, when the solution(ink) is dipped in water and leave it the constituents of that solution start appearing on the filter paper according to their density
4. (a) this technique is used in blood testing
(b) this technique is used in DNA fingerprinting.
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