ABC26OR0133 · Number of signals observed in the 13 C NMR spectrum of the following compound is · JUNE 2018
ABC26OR0992 · Number of signals observed in the 13 C ~ NMR spectrum of the following compound is · JUNE 2018
ABC26OR1013 · Which of the patterns (A,B,C or D) fits best with the 13 C ~ N M R spectrum of TiCl3 (CDH2 ), [Given: J(C-H)1 > J(C-D)1 ] · JUNE 2021
NMR 1H
ABC26OR0944 · An organic compound A (C8 H16 O2 ) on treatment with an excess of methyl-magnesium chloride generated two alcohols B and C, whereas… · JUNE 2011
ABC26OR0945 · In the IR spectrum, carbonyl absorption band for the following compound appears at · DEC 2016
ABC26OR0949 · Appropriate 1 H ~ NMR chemical shifts ( delta ) for the protons A-D for the following compound are · DEC 2011
ABC26OR0951 · In the 400 MHz, 1 H NMR spectrum of organic compound exhibited a doublet. The two lines of the doublet are at delta 2.35 and 2.38 ppm . The… · JUNE 2012
ABC26OR0954 · In the 1 H NMR spectrum recorded at 293 K , an organic compound (H7 NO ), exhibited signals at delta 7 . 8(1H, s), 2 . 8(3H, s) and 2… · DEC 2012
ABC26OR0126 · An organic compound exhibited the following 1H NMR spectra data: delta : 7.80(2H, d, J=8\,Hz), 6.80(2H, d, J=8\,Hz), 4.10(2H, q… · JUNE 2013self-practice
ABC26OR0961 · An organic compound having the molecular formula C10 H14 exhibited two singlets in the 1 H NMR spectrum, and three signals in the 13 C NMR… · DEC 2013
ABC26OR0963 · Methyl 4-oxopentanoate exhibited signals at delta 208, 172, 51, 37, 32 and 27 ppm in its 13 C NMR spectrum. The signals due to the methoxy… · DEC 2013
ABC26OR0970 · The following reactions give a product (racemic) which exhibits the following NMR data: 1 H ~ NMR: delta 2.67(2H, s), 5 . 60(2H, s) ~ p p m… · DEC 2014
ABC26OR0972 · The 1 H ~ NMR spectrum of a dilute solution of a mixture of acetone and dichloromethane in CDCl3 exhibits two singlet of 1: 1 intensity… · JUNE 2015
ABC26OR0978 · The number of chemical shift non-equivalent protons expected in 1H ~ N M R spectrum of alpha - pinene is alpha -pinene · DEC 2015
ABC26OR0980 · In the 1 H NMR spectrum of myrtenal, the two methyl groups are expected to display signals at (chemical shift values delta in ppm) myrtenal · JUNE 2016
ABC26OR0129 · 1H NMR spectrum of an organic compound recorded on a 500 MHz spectrometer showed a quartet with line positions at 1759, 1753, 1747, 1741… · DEC 2016
ABC26OR0982 · 'H NMR spectrum of an organic compound recorded on a 500 MHz spectrometer showed a quartet with line positions at 1759,1753,1747,1741 Hz… · DEC 2016
ABC26OR0984 · 1 H ~ NMR spectrum of a mixture of benzene and acetonitrile shows two singlets of equal integration. The molar ratio of benzene… · DEC 2016
ABC26OR0130 · 13 C NMR spectrum of DMSO- d6 gives a signal at delta 39.7 ppm as a · JUNE 2017
ABC26OR0986 · 13 C NMR spectrum of DMSO- d6 gives a signal at delta 39.7 ppm as a · JUNE 2017
ABC26OR0988 · The organic compound that displays following data is 'H-NMR (400 MHz): delta 7.38 (d), 7.25 (d), 1.29 (s) ppm · DEC 2017
ABC26OR0132 · The correct match of the circled protons in Column P with 1H NMR chemical shift ( delta ppm) in Column Q is P I II III Q A. 6.72 B. 16.4 C… · DEC 2017
ABC26OR0989 · The correct match of the circled protons in Column P with 1 H NMR chemical shift ( delta ppm) in Column Q is P Q I A. 6.72 II III B. 16.4… · DEC 2017
ABC26OR0134 · The reaction of [(5-C5H5)Fe(CO)2] with CH3I gives compound A. The 1H NMR spectrum of A shows two singlets in an integrated intensity ratio… · JUNE 2018
ABC26OR0993 · The reaction of [ (5-C5 H5 ) Fe (CO2 ) ] with CH3 I gives compound A. The 1 H NMR spectrum of A shows two singlets in an integrated… · JUNE 2018
ABC26OR0135 · The correct match of protons in column A with the 1H NMR chemical shifts in column B for the product of the following reaction is · JUNE 2018
ABC26OR0995 · The correct match of protons in column A with the 1 H NMR chemical shifts in column B for the product of the following reaction is · JUNE 2018
ABC26OR0137 · The compound P undergoes a pericyclic reaction under photochemical conditions to give compound Q. In compound Q, the relative… · DEC 2018
ABC26OR0998 · The compound P undergoes a pericyclic reaction under photochemical conditions to give compound Q. In compound Q, the relative… · DEC 2018
ABC26OR1003 · The correct match of 13C NMR chemical shift values ( delta ppm) for pyridine is · DEC 2019
ABC26OR1007 · The natural product that gives a signal at 218 ppm in its 13 C NMR spectrum is · DEC 2019
ABC26OR1011 · Which of the following molecule has the 1H NMR spectrum: delta 2.3 (s, 3H), 3.9 (s, 3H), 7.25 (d, J=7Hz, 2H), 7.95 (d, J=7Hz, 2H) ppm. · JUNE 2021
ABC26OR1012 · A compound shows [M]+ at m/z 84 and has base peak at 56. It exhibits only one peak in 1H NMR at delta 1.4 ppm and one signal in 13C NMR at… · JUNE 2021
Organic Spectroscopy – General
ABC26OR0940 · The absorption at _ max =279 nm(=15) in the UV spectrum of acetone is due to · JUNE 2011
ABC26OR0958 · In the UV-visible is spectrum, a diterpenoid exhibited =275 nm. The compound, among the choices given below is · JUNE 2013
ABC26OR0959 · In the broad band decoupled 13 C NMR spectrum, the number of signals appearing for the two pyrene diols A and B (A) (B) · JUNE 2013
ABC26OR0990 · Using a double beam UV-visible spectrophotometer, Beer's law fails for K 2 Cr2 O7 solution when · JUNE 2018
ABC26OR0136 · In the 31 P \ 1 H \ NMR spectrum of a diamagnetic complex m e r- [M (PR3 )3 Cl3 ] expected number of resonance is · DEC 2018
ABC26OR0999 · The number of ' H NMR signals observed for the following compound is · JUNE 2019
UV Vis
ABC26OR0124 · In the UV-visible is spectrum, a diterpenoid exhibited a =275 nm. The compound, among the choices given below is · JUNE 2013