Question

Why does a lump of cotton wool shrink in water?​

Answer 1

ANSWER

• Cotton wool remains fluffy because of air trapped in it.
• When a lump of cotton wool is dipped in water, the air goes out of the lump.
• Due to this, the cotton wool shrinks when dipped in water.
• Thus, both plants and animals help each other in the exchange of gases in the atmosphere.

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Answer 2

HEYA MATE♡♡♡♡♡♡♡

Lump of Cotton wool when dipped in water shrinks because of the presence of air between the gaps of cotton fibre. When it is dipped, the water replaces air from those gaps, making the cotton lump heavy and it finally shrinks as the air gaps are removed.

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