NEET 2024 · ChemistryPrevious Year Question
A compound with a molecular formula has two tertiary carbons. Its IUPAC name is:
Answer: (B) 2,3-dimethylbutane. \textbf{Answer:} (b) \textbf{Solution:} A tertiary carbon is bonded to three other carbons.
- A.2-methylpentane
- B.2,3-dimethylbutane✓
- C.2,2-dimethylbutane
- D.n-hexane
Correct Answer
(B) 2,3-dimethylbutane
Solution & Explanation
\textbf{Answer:} (b) \textbf{Solution:} A tertiary carbon is bonded to three other carbons. In 2,3-dimethylbutane, , each of the two central carbons (C-2 and C-3) is bonded to three carbons, giving exactly two tertiary carbons. 2-Methylpentane has only one tertiary carbon, 2,2-dimethylbutane has a quaternary carbon (and no two tertiary carbons), and n-hexane has none.
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