__________ is example of pure form of cellulose?
Correct answer: C. Cotton
- A. Silk
- B. Wool
- C. Cotton
- D. Paper
Explanation
Cotton fibres are composed almost entirely of cellulose, a polymer of beta-glucose units, making cotton the usual example of relatively pure natural cellulose. Students may choose paper because it is also mainly cellulose, but paper commonly contains lignin, fillers or other additives and is not considered a pure form.
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