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NEET levelSingle correct optionDifficulty 1 of 3o2175

A 1,2-hydride shift in the carbocation $(CH X_{3}) X_{2} CH - CH X^{+} - CH X_{3}$ gives

A $(CH X_{3}) X_{2} CH - CH X_{2} - CH X_{2} X^{+}$
B $+ CH X_{2} - CH (CH X_{3}) - CH X_{2} CH X_{3}$
C $CH X_{3} - CH (+) - CH (CH X_{3}) X_{2}$ (the same ion)
D $(CH X_{3}) X_{2} C X^{+} - CH X_{2} - CH X_{3}$

Answer: D

The hydrogen on the carbon next to the cationic centre moves with its bonding pair. The positive charge moves to the tertiary carbon, giving the more stable

(CH X_{3}) X_{2} C X^{+} - CH X_{2} CH X_{3}

.

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