1
Given below are two statements: In the light of the above statements, choose the correct answer from the options given below
- Both Statement I and Statement II are false
- Both Statement I and Statement II are true
- Statement I is false but Statement II is true
- Statement I is true but Statement II is false
Answer
(4) Statement I is true but Statement II is false
Solution
Statement I:
Cotton is cellulose, a polymer of β-D-glucose units; every unit carries three free –OH groups.
These –OH groups form extensive hydrogen bonds with water, so cotton absorbs and holds much water.
Wet cotton clothes take a longer time to dry than wet nylon clothes. Statement I is true.
Statement II:
Nylon is a polyamide; its N–H and C=O groups are mostly used up in strong interchain hydrogen bonds, and the long -(CH2)n- chains are hydrophobic.
Hydrogen bonding of nylon with water is much less than that of cotton.
Statement II is false.
Answer: (4)
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