Organic Spectroscopy · Organic Chemistry

ABC26OR0947 · An organic compound (MF=C 8 H10 O ) exhibited the following 1 H NMR spectral data: delta 2.5 (3 H, s), 3.8(3 H, s), 6.8(2 H, d, J=8 Hz)… · DEC 2011

ABC26OR0948 · An organic compound having molecular formula C 15 H14 O exhibited the following 1 H and 13 C NMR spectral data. 1 H ~ N M R ~ : ~ delta… · DEC 2011 self-practice

ABC26OR0956 · An organic compound (C9 H10 O3 ) exhibited the following spectral data: IR: 3400 , 1680 ~ c m- 1 ; 1 H ~ NMR: delta 7.8(1H, d, J=8 Hz), 7… · DEC 2012

ABC26OR0962 · An organic compound (C8 H10 O2 ), which does not change the color of ferric chloride solution, · DEC 2013 self-practice

ABC26OR0965 · An organic compound gives following spectral data: IR : 2210, 1724 cm-1, 1 H NMR: delta 1.4(t, J=7.1 Hz, 3 H), 4.4(q, J=7.1 Hz, 2 H) ; 13 C… · JUNE 2014

ABC26OR0967 · A compound with molecular formula C4 H6 O2 shows band at 1770 cm-1 in IR spectrum and peaks at 178,68,28 and 22 ppm in 13 C NMR spectrum… · DEC 2014

ABC26OR0971 · An organic compound having molecular formula C 10 H12 O2 exhibits the following spectral data: IR: 3400 (br), 1600 cm8 □ · DEC 2014 self-practice

ABC26OR0975 · An organic compounds shows following spectral data: IR ( cm-1 ): 1680 1 H NMR (CDCl3 ): delta 7.66(m, 1 H), 7.60(m, 1 H), 7.10(m, 1 H)… · JUNE 2015

ABC26OR0976 · The structure of the compounds that matches the 1H ~ NMR data given below is 1 H ~ NMR ~ DMSO-d6: delta 7.75 dd, J=8 . 8 , 2 . 4 Hz, 1H, 7… · DEC 2015

ABC26OR0981 · A compound displays the following spectral data. The correct structure of the compound is IR: 1690 ~ cm -1. 1 H NMR: delta 2.5(s, 3H)… · JUNE 2016

ABC26OR0985 · O 48. The compound that exhibits following spectral data is 1 H NMR: delta 8.0(d, J=12.3 Hz, 1 H). · DEC 2016 self-practice

ABC26OR0131 · The correct structure of the compound based on the following characteristic spectral data is IR: 1736\,cm-1 1H NMR: delta 3.59 (s, 3H)… · JUNE 2017

ABC26OR0987 · The correct structure of the compound based on the following characteristic spectral data is IR: 1736 ~ c m-1 1 H ~ NMR: delta 3.59(s, 3… · JUNE 2017

ABC26OR0994 · A compound shows following spectral data. 1 H ~ NMR: delta =7 . 9(d, J=8 ~ Hz, 2H), 6 . 6(d, J=8 Hz, 2 H), 4.3(q, J=6 Hz, 2 H) .4 .0 (s, D2… · JUNE 2018

ABC26OR0997 · Partial spectroscopic data is given below for an organic compound (i) 4 signals between delta 120 - 150 ~ p p m in 13 C ~ N M R spectrum… · DEC 2018

ABC26OR1001 · The compound that exhibits the following spectral data is IR: () 1685\,cm-1; 1H NMR: delta = 7.84 (d, J=8 Hz, 2H), 7.60 (d, J=8 Hz, 2H)… · JUNE 2019

ABC26OR1006 · The structure of the compound which displays the following spectral data is IR = 1690, 1100\,cm-1 1H NMR: delta 2.8 (s, 3H), 3.8 (s, 3H)… · DEC 2019

ABC26OR1009 · The structure that exhibits the following spectral data is arrayl IR (): 1740\,cm-1 \\ 1H\ NMR: delta =0.9(t,3H), 1.6(sext,2H), 2.3(t,2H)… · DEC 2019

ABC26OR0121 · In the mass spectrum of the compound given below, during the alpha -cleavage, the order of preferential loss of groups is: · JUNE 2011

ABC26OR0943 · The major compound X formed in the following reaction exhibited a strong absorption at v_ m a x =1765 cm-1 in the IR spectrum. The… · JUNE 2011

ABC26OR0123 · In the IR spectrum of p-nitrophenyl acetate, the carbonyl absorption band appears at · DEC 2012

ABC26OR0955 · In the IR spectrum of p-nitrophenyl acetate, the carbonyl absorption band appears at · DEC 2012

ABC26OR0957 · In the IR spectrum, the absorption band due to carbonyl group in phenyl acetate appears at · JUNE 2013

ABC26OR0127 · In the IR spectrum of p-nitrophenyl acetate, the carbonyl absorption band appears at · DEC 2013

ABC26OR0960 · In the IR spectrum of p-nitrophenyl acetate, the carbonyl absorption band appears at · DEC 2013 self-practice

ABC26OR0973 · Intense band generally observed for a carbonyl group in the IR spectrum is due to · JUNE 2015

ABC26OR0977 · Correctly matched structure and carbonyl stretching frequency set is COLUMN - A COLUMN -B (P) (X) 1750 cm-1 (Q) (Y) 1770 cm-1 (R) (Z) 1800… · DEC 2015

ABC26OR0996 · In IR spectra, the stretching frequency (in cm-1 ) of the carbonyl group of the following compounds is in the order · DEC 2018

ABC26OR1002 · In IR spectrum, recorded neat, a compound shows a strong and broad band at 3300\,cm-1. The band becomes sharp and shifts to 3600\,cm-1 when… · DEC 2019

ABC26OR0138 · The frequency of O-H stretch occurs at 3600\,cm-1. The O-D stretch frequency (in cm-1) would be closest to · DEC 2019

ABC26OR1004 · The frequency of O-H stretch occurs at 3600\,cm-1. The O-D stretch frequency (in cm-1) would be closest to · DEC 2019

ABC26OR1008 · The correct order of carbonyl stretching frequency of the given compounds is A B C · DEC 2019

ABC26OR1010 · The correct order of C=O stretching frequency in IR spectrum for the following compound is A B C · JUNE 2021

ABC26OR0942 · In the mass spectrum of dichlorobenzene the ratio of the peaks at m / z 146, 148 and 150 , is: · JUNE 2011

ABC26OR0946 · In the mass spectrum of dodecahedron (C20 H20 ), approximate ratio of the peaks at m / z=260 and 261 is · DEC 2011

ABC26OR0966 · The mass spectrum of the product A, formed in the following reaction, exhibits M, M + 2, M + 4 peaks in the ratio of about 1 : 2 : 1. The… · JUNE 2014

ABC26OR0128 · The mass of metastable ion produced due to decomposition of F1+ in the following mass fragmentation sequence is arrayl Diethyl-phthalate… · DEC 2014

ABC26OR0968 · The mass of metastable ion produced due to decomposition of F1 + in the following mass fragmentation sequence is arrayccc Diethyl-phthalate… · DEC 2014

ABC26OR0979 · In the mass spectrum of 1,2-dichloroethane, approximate ratio of peaks at m / z values 98, 100, 102 will be · DEC 2015

ABC26OR0991 · Mass spectrum of a compound shows [M2+ ] ion peak that is about 4 \% of M+. This indicates that the compound has one- · JUNE 2018 disputed

ABC26OR1000 · The compound that will show a base peak at m / z 120 in its EI mass spectrum is · JUNE 2019

ABC26OR0139 · The compound that shows peaks in the EI mass spectrum at m/z 121, 105, 77, 44 is · DEC 2019

ABC26OR1005 · The compound that shows peaks in the EI mass spectrum at m / z 121,105,77,44 is · DEC 2019

ABC26OR0941 · In the broad band decoupled 13 C NMR spectrum, the numbers of signals apperating for the bicyclooctane A-C , respectively are (A) (B) (C) · JUNE 2011

ABC26OR0950 · The number of signals that appear in the broadband decoupled 13 C NMR spectrum of phenanthrene and anthracene, respectively are · JUNE 2012

ABC26OR0125 · In the broad band decoupled 13C NMR spectrum, the number of signals appearing for the two pyrene diols A and B (A) (B) · JUNE 2013

ABC26OR0964 · The correct 13 C NMR chemical ( delta ) shift values of carbons labeled a-e in the following ester are · JUNE 2014

ABC26OR0969 · The ratio of the relative intensities of the carbon signals in the first order 13 C NMR spectrum of CD3 Cl is · DEC 2014

ABC26OR0974 · Number of signals in the 13 C \1 H \ NMR spectrum of (R)-4-methylpentan- 2-ol are · JUNE 2015

ABC26OR0983 · Number of signals present in the proton decoupled 13 C NMR spectrum of the following compound is · DEC 2016