Which one of the following gives onlyh one monochloro derivative?

1.	Which one of the following gives onlyh one monochloro derivative?
Answer» neo-Pentane n-Hexane 2-ethylpentane 3-Methylpentane Solution :neo-Pentane or 2,2-dimethylpropane has only PRIMARY HYDROGEN hence it can give only monochloro derivative. All other COMPOUNDS have `1^(@),2^(@) and 3^(@)` hydrogens hence they give MONO, di or trisubstituted products.

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