7th Class Science Sample Paper Science Sample Paper - 4

  • question_answer How are silk fibres at different textures prepared?


    The silk yarn is obtained form the cocoon of the silk moth. There is a variety of silk moths which look very different from one another and the silk yarn they yield is different in texture like coarse, smooth and shiny etc. thus, tassar silk, muga silk and kosa silk are obtained from cocoon spun by different types of moths.       


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