Question

20. Following reactions are possible
1:CH-CHCOOH 1, CH2 - CH2
O A
O
COOH
III : CH,CH(COOH), A, CH,CH,COOH
In which case(s). parent compound loses its
preference?
(a) I and II
(b) I, II and III
(c) II and I
(d) I and III​

Answer 1

I. The principal group (−COOH) is lost.

II. Same as is (I)

III. One (−COOH) group is lost, but still one (−COOH) group is left in the product.