Geo-Scientist Prelims 2025 Chemistry Q111: The major product formed in the following reaction is :

The major product formed in the following reaction is :

1. (a) 1,1,2-Trimethylindane bearing a 2-hydroxyethyl group at C4
2. (b) 2-tert-Butyl-1,2,3,4-tetrahydronaphthalene
3. (c) Seven-membered cyclic ether (tetrahydro-3-benzoxepine) with a tert-butyl group next to O
4. (d) Eight-membered cyclic ether (benzoxocine) with gem-dimethyl next to O and a methyl on the adjacent carbon