Why does a lump of cotton wool shrink in waterCBSE Class 6 Science NCERT
The Eduladder is a community of students, teachers, and programmers just interested to make you pass any exams. So we solve previous year question papers for you.
See Our team
Wondering how we keep quality?
Got unsolved questions?

Ask Questions

Use Me  ?

New searches
CBSE-Class-6-Science-NCERT-->View question


Why does a lump of cotton wool shrink in water?CBSE-Class 6 Science NCERT

From Chapter- 15 "AIR AROUND US"


By:juboya

Taged users:


Likes:
Be first to like this question

Dislikes:
Be first to dislike this question

Talk about thisDelete|Like|Dislike|


Answers

Cotton wool shrinks in water for two main reasons.
1. Cotton (and wool, silk, etc.) swell up when they come in contact with water because they absorb water. They subsequently shrink when the water is removed from them. This is called water regain. Cotton has the fifth highest water regain (with wool having the most).
2. When agitated, such as when hand/machine washed (much more apparent in machine washing), the cotton fibres are forced together, packing more closely, which gives the overall effect of shrinking the cotton.
                                                                                                                           
Contributed by, Satya Shiromani


satyashiromani

Likes:
|satyashiromani

Dislikes:
Be first to dislike this answer
Talk about this|Once you have earned teacher badge you can edit this questionDelete|Like|Dislike|
------------------------------------

Can you help us to add better answer here? Please see this



Not the answer you're looking for? Browse other questions from this Question paper or ask your own question.

Join eduladder!