The major ingredient of leather is ______?

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The major ingredient of leather is ______? Answer: Collagen

Collagen is a structural protein found in animal hides and skins, and it is the main component in leather. During the leather-making process (tanning), collagen fibers are preserved and treated to make the material durable and flexible.

Question context

This question is part of 🔬 General Science within the broader 🌐 Current Affairs & GK subject and appears in the SPSC – Sindh Public Service Commission preparation collection. Reviewing the answer together with nearby questions helps reinforce the underlying concept and identify how it may appear in competitive exams.