Activity 3.6
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?
To remember when the cocoon stage
is reached in the life history of the silk
moth, try the following activity.
Answers
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2
Answer:
Explanation:
The fabric which burns giving a smell of burning hair is natural silk or pure silk.
The fabric which burns giving a smell of burning paper is an artificial silk.
Like silk, wool is also made up of proteins. So, a piece of woollen fabric also burns giving the smell of burning hai
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Answer:
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Explanation:
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