PDF chapter test TRY NOW

Briefly answer the following question:
 
A child wanted to separate the mixture of dyes constituting a ink sample. He marked a line by the ink on the filter paper and placed the filter paper in a glass containing water, as shown in the below figure. The filter paper was removed when the water moved near the top of the filter paper.
 
YCIND_221108_4650_matter_around_us_2.png
 
(i). What would you expect to see, if the ink contains three different coloured components?

(ii). Name the technique used by the child.

(iii). Suggest one more application of this technique.