Take an artificial (synthetic) silk thread
and a pure silk thread. Burn these
threads carefully. Did you notice any
difference in the smell while burning?
Now. burn a woollen fibre carefully.
Did it smell like burning of artificial
silk or that of pure silk? Can you
explain why?
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Artificial silk thread and pure silk thread. when burn these threads carefully.The fabric which burns giving a smell of burning hairs is natural silk or pur silk .Burn a woolen fibre carefully. The fabric which burns giving a smell and burning paper is an artificial silk .like, wool is also made up of protein .And wool is obtained from animals hair so it gives smell of burning hairs.