Question

Write the separation techniques of separating dry black ink. blood components from the whole blood

Answer 1

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Method:

1. Take a thin strip of filter paper.

2. Draw a line on it using a pencil approx. 3 cm above the lower edge.

3. Put a small drop of ink with help of a pen at centre of line and let it dry.

4. Lower the filter paper into a glass jar containing water in such a way that the ink's drop remains just above the water level. Leave it undisturbed.

5. Water rises up in the filter paper. Ink drop splits up into its constituents.

Conclusion:Dye in black ink is a mixture of 2 or 3 colours. The coloured component that is more soluble in water rises faster and in this way the colours get separated.