JEE Chemistry 2025 Question with Solution

Given: A molecule $X$ is shown, and its correct structure must be identified from the four given options.

Find: Which option represents the structure of $X$.

The solution identifies the ring system by visual comparison. It states that the given molecule appears as a fused bicyclic structure containing a five-membered ring fused with a six-membered ring.

By comparing the drawn framework of $X$ with the options, the matching structure is identified as the second option.

The extracted solution concludes that the structure corresponds to indene-like fused ring arrangement, and therefore the correct option is B.

Therefore, the correct option is B.

Given: The molecule $X$ and four structural choices are provided.

Find: The option whose ring connectivity matches $X$.

1. First observe the fused ring framework in $X$.
2. The structure contains two fused rings with a characteristic arrangement of unsaturation.
3. Compare this framework with each of the four options.
4. The second option reproduces the same bicyclic connectivity and placement of double bonds.
5. The other options differ because of bromine and hydrogen placement or mismatch in the ring arrangement.

Hence, on direct structural comparison, option 2 matches $X$.

Therefore, the correct option is B.