Question

does cotton shrinks on burning​

Answer 1

$\huge\underline\mathbf\red{ANSWER:}$

it turns into ash because it is a natural fibre..

Answer 2

Answer: If these are cotton yarns, they burn but do not shrink or melt. The burning yarn gives an odour similar to burning paper. The silk yarn shrinks away from the flame and burns but does not melt.