Question

Why should the capillary be cleaned every time before use ?
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Answer 1

Answer:

Capillarity is the result of surface, or interfacial, forces. The rise of water in a thin tube inserted in water is caused by forces of attraction between the molecules of water and the glass walls and among the molecules of water themselves. ... The narrower the bore of the capillary tube, the higher the water rises.

Explanation:

Answer 2

Answer:

Please mark me as brainliest

Explanation:

Because it has some dust everytime