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(D) The reaction of a primary aliphatic amine with $NaNO_2$ and $HCl$ at $0-5^{\circ}C$ produces an unstable diazonium salt. This diazonium salt under

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Decalin$-2-$ol

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(D) The reaction of a primary aliphatic amine with $NaNO_2$ and $HCl$ at $0-5^{\circ}C$ produces an unstable diazonium salt. This diazonium salt undergoes rapid loss of $N_2$ gas to form a primary carbocation. Since the primary carbocation is unstable,it undergoes a ring expansion rearrangement to form a more stable secondary carbocation. Specifically,the $5$-membered ring expands to a $6$-membered ring to form a decalin system. Finally,the secondary carbocation reacts with water to form the major product,which is decalin-$2$-ol.

The major product formed in the reaction given below will be

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