Q. The absorption by blotting paper involves which of the following?

[A] Viscosity of ink

[B] Capillary action phenomenon

[C] Diffusion of ink through the blotting

[D] Siphon action

Answer: B
Notes:

The absorption of ink by blotting paper involves capillary action phenomenon because the blotting paper is a thin and a smooth paper which allows a little thicker liquids like ink to absorb.

Source: NCERT

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