Question

why wet ink is absorbed by blotting paper

Answer 1

Blotting paper, sometimes called bibulous paper, is a highly absorbent type of paper or other material. It is used to absorb an excess of liquid substances (such as ink or oil) from the surface of writing paper or objects. ..

Answer 2

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The absorption of ink by bloating paper involves capillary phenomenon where adhesive force between bloating paper & ink is greater than cohesive force.