Page
Date
Q2
Radhika wanted
to buy a silk frock and
went to the market with her mother.
There they found that the artificial
(synthetic) silk was much cheaper and
wanted to know why? Do you know why?
Find out?
Answers
Answer:
Artificial (synthetic) silk called rayon is obtained from wood pulp and it is made of modified plant material cellulose. Synthetic silk can be prepared at a large scale in factories/mills. So it is cheap. For obtaining pure silk, we have to rear silk moth, their larvae to get pupa.
Artificial (synthetic) silk called rayon is obtained from wood pulp and it is made of modified plant material cellulose. Synthetic silk can be prepared at a large scale in factories/mills. So it is cheap. For obtaining pure silk, we have to rear silk moth, their larvae to get pupa.To get silk thread, we have to dip cocoon in hot water to get silk thread which is wrapped over the cocoon. The pupa inside the cocoon dies. To obtain silk for commercial purposes, a large number of cocoons (containing living pupa) arew killed. As a result, natural silk is costly.