The major product formed in the following reaction is

The given reaction involves an acid-catalyzed dehydration of an alcohol. Let's analyze the step-by-step mechanism to determine the major product:
The major product in this reaction will be the alkene that arises from the most substituted and stable carbocation intermediate.
Therefore, the product formed from this dehydration is:

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