HomeEveryday Science MCQsThe major ingredient of leather is__________________? 1501. The major ingredient of leather is__________________?By Admin / September 17, 2025 A. Collagen B. Polymer C. Nucleic acid D. None of these ✅ The correct answer is option A.
1. Which of the following does not pollute the air? Leave a Comment / Everyday Science MCQs / By Admin
2. Which of the following planets have the longest day? Leave a Comment / Everyday Science MCQs / By Admin