Given below are two statements: Statement I: Wet cotton clothes made of cellulose based carbohydrate takes comparatively longer time to get dried than wet nylon polymer based clothes. Statement II: Intermolecular hydrogen bonding with water molecule is more in nylon-based clothes than in the case of cotton clothes. In the light of above statements, choose the correct answer from the options given below :

Solution & Explanation

### Related Formula Hydrogen bonding affinity: textAffinity for water propto textDensity of accessible hydroxyl groups (-OH) ### Core Logic Statement I Analysis: - Cotton is made of cellulose, which possesses a high density of free hydroxyl (-OH) groups per monomer unit. These groups form strong intermolecular hydrogen bonds with water molecules, holding moisture tightly. Nylon is a synthetic polyamide with much lower hydrogen bonding affinity for water. Thus, cotton clothes retain water longer and dry slower than nylon clothes. Statement I is True. ### Step 1: Analyze Statement II - Statement II claims that hydrogen bonding with water is stronger in nylon than in cotton. This is False because cellulose (cotton) contains a much higher density of active hydrophilic hydroxyl (-OH) groups compared to the amide groups in nylon, which are often engaged in intramolecular crystalline structures within the polymer itself. ### Step 2: Conclusion Therefore, Statement I is True but Statement II is False, matching Option (2). ### Pattern Recognition Natural fibers like cotton (cellulose) are highly hydrophilic due to the presence of multiple hydroxyl groups per glucose unit, leading to high water absorption and slower drying. Synthetic fibers like nylon are hydrophobic by comparison, leading to minimal absorption and rapid drying. ### Evaluation Rubric / Model Answer null ### Chapter Mix Class 12 Chemistry: Polymers Class 12 Chemistry: Biomolecules

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