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  4. Among the following two, which carbon chain should be selected as parent chain, according to IUPAC nomenclature? <img class=img-fluid question-image alt=image src=https://cdn.tardigrade.in/img/question/chemistry/61bf75381cb0b272049356eef73f19a7-.png />

Q. Among the following two, which carbon chain should be selected as parent chain, according to IUPAC nomenclature?
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Solution:

First of all, longest carbon chain of the molecule is identified. In the example, the longest chain has nine carbons and it is considered as the parent or root chain.