JEE Main Chemistry question
Not in JEE Main or NEET syllabus
Each question contains ASSERTION (Assertion) and REASON (Reason). Each question has the 4 choices (a), (b), (c) and (d), out of which ONLY ONE is correct.
Statement 1 (Assertion): Polyvinyl alcohol is obtained by polymerization of vinyl alcohol. Statement 2 (Reason): Polyvinyl alcohol is prepared by hydrolysis of polyvinyl acetate.
Answer: (D)
Solution
Vinyl alcohol () is not a stable, isolable monomer — it spontaneously tautomerises to acetaldehyde, so polyvinyl alcohol cannot actually be made by its direct polymerization, making the assertion false.
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