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8th Class Science Synthetic Fibers and Plastics Question Bank Synthetic Fibres and Plastics

  • question_answer
    What do silk fibres consist of?

    A) Vitamins                     

    B)                        Carbohydrates      

    C)                        Proteins                      

    D)                        Fats

    Correct Answer: C

    Solution :

    The caterpillar secretes a protein called fibroin which hardens on exposure to air and become silk fibres.


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