A hydrocarbon C5H10 does not react with chlorine in dark but gives a single monochloro compound C5H9Cl in bright sunlight. The hydrocarbon isa)Cyclopenteneb)Cyclopentanec)Cycloalkyned)None of theseCorrect answer is option 'B'. Can you explain this answer?

Question

Answer

Explanation:

Hydrocarbon Analysis:
- The given hydrocarbon is C5H10, which has the molecular formula of a cyclopentane ring.
- The lack of reaction in the dark indicates that there is no functional group like a double bond or triple bond present in the molecule.

Reaction with Chlorine in Sunlight:
- When the hydrocarbon C5H10 reacts with chlorine in bright sunlight, it forms a single monochloro compound C5H9Cl.
- This reaction suggests that a hydrogen atom in the cyclopentane ring has been replaced by a chlorine atom, resulting in the formation of a monochloro compound.

Identification of the Hydrocarbon:
- Among the options provided, only cyclopentane (option b) fits the description of the hydrocarbon C5H10.
- Cyclopentene contains a double bond, which would react with chlorine in the dark to form a dichloro compound.
- Cycloalkynes contain a triple bond, which would also react differently with chlorine.

Therefore, the correct answer is option b) Cyclopentane.

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