Main constituent of cotton fiber is __________________?
Correct answer: B. Cellulose
- A. Lignin
- B. Cellulose
- C. Starch
- D. Gelatine
Explanation
Cotton fibre is composed mainly of cellulose, a linear polysaccharide made from β-glucose units. Lignin is associated chiefly with wood, while starch is a storage carbohydrate rather than the main structural material of cotton.
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