Give IUPAC name of the compound given below. 

        CH₃—CH—CH₂--CH₂--CH—CH₃

                    |                                |

                  Cl                             OH

I. 2-Chloro-5-hydroxyhexane

II. 2-Hydroxy-5-chlorohexane 

III. 5-Chlorohexan-2-ol

IV. 2-Chlorohexan-5-ol 

<p><span data-teams="true">This is a multiple choice answer as classified in NCERT Exemplar</span></p><p> (III) 5-Chlorohexan-2-ol&nbsp;</p><p>The IUPAC naming of the given compound are as follows:</p><p>Word root: It depends upon the number of carbon atoms in the longest continuous carbon chain selected, called the parent chain. Depending upon the number of carbons in the chain the compound is assigned a word.&nbsp; The given compound contain 6 carbon attached in the continuous the longest chain and word root for 6 carbon atoms is ‘hex’.</p><p><strong>The suffix- </strong>A suffix is added after the word root to indicate the nature of the carbon-carbon bond. The given carbon chain contains a single bond then a suffix will be added as “ane”.</p><p><strong>Prefix-</strong> The groups which are not regarded as functional but present in the carbon chain as substituents are written before the word root as a prefix. Such groups are fluorine, chlorine, nitro, etc.</p><p>According to the IUPAC rule, the prefix (Chlorine) will be written first followed by the word root and primary suffix and secondary suffix. As the compound contains chlorine which will be regarded as substituents and will be written as a prefix. The compound contains six carbon atoms due to which it will be considered as hexane and the word root will be “hex”.</p><p>Since it is an alkane compound, the primary suffix will be “ane” and the secondary suffix will be “ol”. Therefore, the IUPAC name of the given compound is 5-Chlorohexan-2-ol.</p>

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