7th Class Science Sample Paper Science Sample Paper - 2

  • question_answer
    Explain the process to obtain silk thread from cocoon.       

    Answer:

    Cocoons of silk moth are used to obtain the silk fibres. These cocoons are kept under the sun or boiled or exposed to steam. The silk fibres separate out. This process of obtaining wool from the cocoons is called reeling the silk. Reeling is done in special machines.  


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