GATE 2022 CY – Question 33
The number of peaks in the broadband proton-decoupled $^{13}C$ NMR spectrum of T, recorded at 25 °C in $CDCl_3$, is ______.
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Correct answer: 8 to 8
Explanation
The molecular symmetry pairs the 14 aromatic carbons into seven equivalent pairs. The two methyl carbons are also equivalent and form one additional environment. Broadband proton decoupling removes C–H splitting without merging distinct chemical environments.
Therefore there are **8 signals**.