Question

14. Intramolecular H-bonding is shown by

Options:
(1) Only (i)
(2) Both (ii) and (iii)
(3) Both (i) and (iii)
(4) (i), (ii) and (iii)
Answer is 3rd option but can anybody explain the working of this question?​

Answer 1

Answer:

3 both a and b you have marked the right answer