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The major ingredient of leather is:

  • A.Collagen
  • B.Carbohydrate
  • C.Polymer
  • D.Nucleic acid

Answer: A

Collagen is the major ingredient of leather - the fibrous protein of animal skin.

Tanning cross-links its fibres so they no longer rot or dry hard. Collagen is also the commonest protein in the body, forming the framework of skin, tendon, bone and cartilage.

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