ABC26PH1099 · The rotational constant of 14 N2 is 2 cm-1. The wave number of incident radiation in a Raman spectrometer is 20487 cm-1. What is the wave… · JUNE 2011
ABC26PH1102 · For the vibrational Raman spectrum of a homonuclear diatomic molecule, the selection rule under harmonic approximation is · JUNE 2012
ABC26PH1106 · A triatomic molecule of the type AB2 shows two IR absorption lines and one IR-Raman line. The structure of the molecule is: · JUNE 2013
ABC26PH1129 · Among the following, both microwave and rotational Raman active molecule is · DEC 2016
ABC26PH1133 · The first electronic absorption band maximum of a polar and relatively rigid aromatic molecule appears at 310 nm but its fluorescence… · JUNE 2017
ABC26PH1134 · The molecule that will show Raman spectrum, but not IR spectrum, among the following is · DEC 2017
ABC26PH1141 · The third and fourth lines in the rotational Raman spectrum of CO are separated by 8 cm-1. The CO bond length is given by · DEC 2018
ABC26PH1152 · The following data is obtained for a light diatomic (AB) molecule from its rotational Raman spectrum. (B=2 cm-1 ; xe=0.01 ; ve=1600 cm-1 )… · JUNE 2021
Rotational
ABC26PH0104 · The microwave spectrum of a molecule yields three rotational constants. The molecule is · JUNE 2011
ABC26PH1093 · The microwave spectrum of a molecule yields three rotational constants. The molecule is · JUNE 2011
ABC26PH1101 · For a diatomic molecule AB, the energy for the rotational transition from J=0 to J=1 state is 3.9 cm-1. The energy for the rotational… · JUNE 2012
ABC26PH1117 · The spectroscopic technique, by which the ground state dissociation energies of diatomic molecules can be estimated, is · JUNE 2015
ABC26PH0111 · The molecule with the smalllest rotational constant (in the microwave spectrum) among the following is · DEC 2015
ABC26PH1119 · The molecule with the smallest rotational constant (in the microwave spectrum) among the following is · DEC 2015
ABC26PH1120 · The spectroscopic technique that can distinguish unambiguously between trans-1, 2 dichloroethylene and cis-1, 2-dichloroethylene without… · DEC 2015
ABC26PH1138 · In the pure Raman rotational spectrum of 16 O2, whose electronic ground state is 3, transitions between to/from · JUNE 2018
ABC26PH0118 · The Berge-Sponer plot between Delta Gv+1/2=(+1-) and (v+1) for CO ia a straight line with slope of -14\,cm-1 and intercept of 2170\,cm-1… · JUNE 2019
ABC26PH1145 · In the pure rotational microwave spectrum of a XY molecule, the adjacent lines are separated by 4 cm-1. If the molecule is irradiated by a… · DEC 2019
Vibrational
ABC26PH0108 · The vibrational energy levels, v''=0 and v'=1 of a diatomic molecule are separated by 2143\,cm-1. Its anharmonicity xe is 14\,cm-1. The… · DEC 2011
ABC26PH1100 · The vibrational energy levels, v =0 and v=1 of a diatomic molecule are separated by 2143 cm-1. Its anharmonicity wexe is 14 cm-1. The… · JUNE 2011
ABC26PH1103 · The following data were obtained from the vibrational fine structure in the vibronic spectrum of a diatomic molecule: =512 cm-1, xe=8 cm-1… · JUNE 2012
ABC26PH1105 · The vibrational frequency and anharmonicity constant of an alkali halide are 300 cm-1 and 0.0025 respectively. The positions (in cm-1 ) of… · DEC 2012
ABC26PH1112 · Bond lengths of homonuclear diatomic molecules can be determined with the help of both · DEC 2014
ABC26PH1113 · If the component of the orbital angular momentum along the molecular axis of a heteronuclear diatomic molecule is non-zero, the… · DEC 2014
ABC26PH0116 · The v=0 to 1 vibration-rotation spectrum of a diatomic molecule exhibits transitions for R(0), R1, P(1) and P(2) lines at 2241, 2254, 2216… · JUNE 2017
ABC26PH1131 · The v=0 to 1 vibration-rotation spectrum of a diatomic molecule exhibits transitions for R(0), R1, P(1) and P(2) lines at 2241,2254,2216… · JUNE 2017
ABC26PH1135 · The normal mode of ethylene represented, by the figure below, is · DEC 2017
ABC26PH1143 · The Berge-Sponer plot between Delta Gv+1/2= (+1- ) and v+1 for CO in a straight line with slope of -14 cm-1 and intercept of 2170 cm-1. The… · JUNE 2019self-practice
ABC26PH1147 · The vibrational transition energies of a diatomic molecule corresponding to v=1 v=0 and v=2 v=1 are 2143.1 cm-1 and 2116.1 cm-1… · DEC 2019
ABC26PH1149 · The correct statement from the following set (i) to (iv) is (i) if q is the displacement from equilibrium for harmonic motion, the… · JUNE 2021