An organic compound $C_{5} H_{11} X$ on dehydrohalogenation gives pentene-2 only. The compound is:

C H_{3} C H_{2} C H X C H_{2} C H_{3}

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(C H_{3})_{2} C H C H X C H_{3}

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C H_{3} C H_{2} C H_{2} C H X C H_{3}

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C H_{3} C H_{2} C H_{2} C H_{2} X

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Solution

The correct option is A $C H_{3} C H_{2} C H X C H_{2} C H_{3}$
Both A & C gives pent - 2 - ene- but in (A) - ene -2 is the only product formed.
So (A) is correct.

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