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The hydrocarbon can be either a cycloalkane or an alkene since it does n’t react with Cl 2 in the dark, it can not be an alkene but must be cycloalkane since the cycloalkane reacts with Cl 2 in the presence of sunlight to give a single monochloro derivative. It shows that it is cyclic hydrocarbon in which hall the hydrogen atoms are identical. Thus, it can be only cyclopentane.

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Haloalkanes and Haloarenes

Short Answer Type

231.
A hydrocarbon C₅H₁₀does not react with chlorine in dark but gives a single monochloro compound C₅H₉Cl in bright sunlight. Identify the hydrocarbon.

The hydrocarbon can be either a cycloalkane or an alkene since it does n’t react with Cl₂ in the dark, it can not be an alkene but must be cycloalkane since the cycloalkane reacts with Cl₂ in the presence of sunlight to give a single monochloro derivative. It shows that it is cyclic hydrocarbon in which hall the hydrogen atoms are identical. Thus, it can be only cyclopentane.

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