ABC26OR0717 · Spectroscopy
Subject: Organic Chemistry · Chapter: Spectroscopy · Topic: Spectroscopy – General · Exam: GATE 2000-2022 · Marks: 2 · Difficulty: Medium
In the photochemical reaction 
formation of the compound X can be inferred by the disappearance of the ${ }^{1} \mathrm{H}$ NMR signal at ${ }^{1} \mathrm{H} \mathrm{NMR}$ spectrum of the starting material: $\delta 9.7(1 \mathrm{H}, \mathrm{s}), 7.8(1 \mathrm{H}, \mathrm{d}, \mathrm{J}=8.0 \mathrm{Hz}), 7.1-6.8(2 \mathrm{H}, \mathrm{m}), 3.9(3 \mathrm{H}, \mathrm{s}), 2.5 \mathrm{H}, \mathrm{s}) \mathrm{ppm}$]
formation of the compound X can be inferred by the disappearance of the ${ }^{1} \mathrm{H}$ NMR signal at ${ }^{1} \mathrm{H} \mathrm{NMR}$ spectrum of the starting material: $\delta 9.7(1 \mathrm{H}, \mathrm{s}), 7.8(1 \mathrm{H}, \mathrm{d}, \mathrm{J}=8.0 \mathrm{Hz}), 7.1-6.8(2 \mathrm{H}, \mathrm{m}), 3.9(3 \mathrm{H}, \mathrm{s}), 2.5 \mathrm{H}, \mathrm{s}) \mathrm{ppm}$](a)$\delta 9.7 \mathrm{ppm}$
(b)$\delta 7.8 \mathrm{ppm}$
(c)$\delta 3.9 \mathrm{ppm}$
(d)$\delta 2.9 \mathrm{ppm}$
Answer
Answer (as printed): A
Explanation
No explanation was printed for this question.