A) Caprolactum
B) Ethylene glycol + phthalic acid
C) 3-hydroxy butanoic acid +3 hydroxy pentanoic acid
D) None of the above
Correct Answer: C
Solution :
On reacting 3-hydroxybutanoic acid and 3-hydroxy pentanoic acid, a biodegradable polymer PHBV formed which can be dissociated into small segments by microorganism and reduces environmental problems. \[\underset{\beta \text{-}hydroxy\,butanoic\,acid}{\mathop{nC{{H}_{3}}-\underset{OH}{\mathop{\underset{\mathbf{|}}{\mathop{CH}}\,}}\,-C{{H}_{2}}-\overset{O}{\mathop{\overset{\mathbf{|}\,\mathbf{|}}{\mathop{C}}\,}}\,-OH}}\,\] \[\underset{\downarrow \beta \text{-}hydroxy\,pentanoic\,acid}{\mathop{+\,C{{H}_{3}}C{{H}_{2}}-\overset{OH}{\mathop{\overset{|}{\mathop{CH}}\,}}\,-C{{H}_{2}}-\overset{O}{\mathop{\overset{\mathbf{|}\,\mathbf{|}}{\mathop{C}}\,}}\,-OH}}\,\]
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