Question

1. Which of the fabrics made from silk, wool, cotton and jute traps air the most?
How does such trapped air affect the property of such fabric ?
2. Why is it necessary to kill the pupae by boiling cocoons in water?


PLEASE ANSWER FAST​

Answer 1

Answer:

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Explanation:

1.Wool has the highest capacity of air trapping than cotton, jute and silk. These characteristics of air trapping make the woollen clothes warmer than garments of other materials because air is always considered as a very bad conductor of heat

2.to make a continues thread of silk we need to kill it otherwise pupa grows and break the cocoon and we will not get a continues thread.. Hence it is necessary and we can avoid it..