Is the dye in the blue/black ink a single colour?

1.	Is the dye in the blue/black ink a single colour?
Answer» no it is always a mixture. It is not a single colour. You can seperate it by the process of chromotography. Follow the steps to do the chromotography. 1. Take a think strip of filter paper 2. Dras a line on it using a pencil, approximately 3cm above the lower edge 3. Put a small drop of ink (from sketch pen) at the centre of the line. 4.Let it dry 5. Lower the filter paper into a jar/glass containing waer o that the drop of ink on the paper is just above the water level . 6. Leave undisturbed Then the water will rise on the filter paper. The water takes the dye particles along with it and it seperates the colours as shown in the figure

Answer»

no it is always a mixture.

It is not a single colour. You can seperate it by the process of chromotography. Follow the steps to do the chromotography.

1. Take a think strip of filter paper

2. Dras a line on it using a pencil, approximately 3cm above the lower edge

3. Put a small drop of ink (from sketch pen) at the centre of the line.

4.Let it dry

5. Lower the filter paper into a jar/glass containing waer o that the drop of ink on the paper is just above the water level .

6. Leave undisturbed

Then the water will rise on the filter paper. The water takes the dye particles along with it and it seperates the colours as shown in the figure

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