Chemistry-IUPAC Nomenclature
NEET Chemistry IUPAC Nomenclature MCQ Question
Type: MCQ-diagram based-Hard-Class 11
Consider a hydrocarbon chain structure with nine carbon atoms and two substituents: an ethyl group at carbon 3 and a methyl group at carbon 5. What is the correct IUPAC name for this compound?
A
3-Ethyl-5-methylnonane
B
5-Methyl-3-ethylnonane
C
3-Methyl-5-ethylnonane
D
5-Ethyl-3-methylnonane
Correct Answer
Option A
Detailed Explanation
According to the NCERT context, substituents are listed in alphabetical order when naming organic compounds. Therefore, 'ethyl' precedes 'methyl', making the correct name 3-Ethyl-5-methylnonane.
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