Q79 · CSIR NET Chemistry, December 2013
Paper: CSIR NET December 2013 · Subject: Organic Chemistry · Chapter: Organic Spectroscopy · Topic: NMR 1H · Marks: 2 · Difficulty: Hard
An organic compound having the molecular formula $\mathrm{C}_{10} \mathrm{H}_{14}$ exhibited two singlets in the ${ }^{1} \mathrm{H}$ NMR spectrum, and three signals in the ${ }^{13} \mathrm{C} \mathrm{NMR}$ spectrum. The compound is
(a)
(b)
(c)
(d)
Answer
Answer: A ✓ checked by 4AB · confidence high
Explanation
1,2,4,5-Tetramethylbenzene (durene) has one CH₃ and one aromatic-H singlet and three carbon environments (CH₃, C–CH₃, C–H) (a).
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