Geo-Scientist Prelims 2026 Chemistry Q116: The reactive intermediates 1-4 that are likely to be formed in the…

The reactive intermediates 1-4 that are likely to be formed in the given reaction are shown below :

What is the sequence of their formation in the mechanism of the above reaction ?

1. (a) 3→2→1→4
2. (b) 3→4→1→2
3. (c) 1→3→4→2
4. (d) 1→4→3→2