The major product formed in the following reaction is

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The reaction provided appears to involve a dehydration process using sulfuric acid (\(\text{H}_2\text{SO}_4\)), which often acts as a dehydrating agent. Given the structure provided in the image:
Here are the steps to determine the major product:
Upon analyzing the given answer options, the major product corresponds to:

This structure shows the expected result of dehydration: the formation of a double bond in the central ring where the leaving group was.
In conclusion, the dehydration by \(\text{H}_2\text{SO}_4\) results in the formation of this product, following the mechanism of elimination to form the most thermodynamically stable alkene.
Ensure to cross-reference these guidelines with the specific organic chemistry principles underlying the reaction for your exact question context.
The ozonolysis of a hydrocarbon in the presence of water produced pentanoic acid and carbonic acid. The hydrocarbon is
Among the given options, the possible product(s) that can be obtained from the following reaction is/are
The major product in the following reaction sequence is

Formation of the ketone II from the diazoketone I involves

The major product formed in the following reaction is