Carboxylic Acids and their Derivatives 2 Question 10

10. Which of the following reactants on reaction with conc. $\mathrm{NaOH}$ followed by acidification gives the following lactone as the only product?

(2006, 5M)

(a)

(b)

(c)

(d)

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Answer:

Correct Answer: 10. (b)

Solution:

10.