GK
GENERAL SCIENCE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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An absorbing chemical is mixed
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It is white
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It has got small pores
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None of these
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Detailed explanation-1: -Detailed Solution. The correct answer is capillary action. The absorption of ink by blotting paper involves a capillary action phenomenon because the blotting paper is a thin and smooth paper that allows a little thicker liquids like ink to absorb. Blotting paper absorbs ink by the process of capillary action.
Detailed explanation-2: -Hence, the absorption of ink by blotting paper involves the capillary action process.
Detailed explanation-3: -If these narrow tubes dipped in a liquid then the liquid in the capillary either rises falls relative to the surrounding liquid level. This phenomenon is known as capillary action.
Detailed explanation-4: -Why? Because ink (liquid) diffuses into the blotting paper, we use blotting paper to remove excess of ink on the paper from a fountain pen.