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The major ingredient of leather is?

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

Answer: A

Collagen is the major ingredient of leather. It is the fibrous protein of animal skin, and tanning stabilises it by cross-linking the 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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