126 questions from this paper that are in the bank. Each opens with its answer and explanation.
ABC26PH1056 · Number of rotational symmetry axes for triclinic crystal system is · Group Theory – General
ABC26PH1057 · The E × E direct product in D3 point group contains the irreducible representations · Character Tables
ABC26PH1058 · The result of the product C2(x)C2(y) is · Group Theory – General
ABC26PH1091 · A molecule, AX, has a vibrational energy of 1000 cm-1 and rotational energy of 10 cm-1. Another molecule, BX, has a vibrational energy of… · Molecular Spectroscopy – General
ABC26PH1092 · At room temperature, which molecule has the maximum rotational entropy? · Molecular Spectroscopy – General
ABC26PH1093 · The microwave spectrum of a molecule yields three rotational constants. The molecule is · Rotational
ABC26PH1094 · The Q band in the vibrational spectrum of acetylene is observed in the · Molecular Spectroscopy – General
ABC26PH1095 · In IR spectrum of [Co(CN)5H]3- the Co–H stretch is observed at 1840 cm-1. The (Co–D) stretch in [Co(CN)5D]3- will appear at nearly · Molecular Spectroscopy – General
ABC26PH1097 · The uncertainty in the NMR frequency of a compound in liquid state (relaxation time = 1 s) is 0.1 Hz. The uncertainty in the frequency (in… · NMR ESR Physical
ABC26PH1098 · The NMR spectrum of AX, exhibits lines at delta =2.1 and 2.3 ppm (for X type protons) and = 4.1, 4.3, 4.5 and 4.7 ppm (for A type protons)… · Molecular Spectroscopy – General
ABC26PH1099 · The rotational constant of 14N2 is 2 cm-1. The wave number of incident radiation in a Raman spectrometer is 20487 cm-1. What is the wave… · Raman
ABC26PH1154 · Saturation factor in neutron activation analysis is (A = induced radioactivity, psi = neutron flux, sigma = effective nuclear cross… · Nuclear Chemistry – General
ABC26PH1156 · The penetrating power (R) and ionizing power (I) of alpha, beta, and gamma rays follow the ordering · Nuclear Chemistry – General
ABC26PH1157 · The reactive cross section is expected to be the largest for the reaction · Nuclear Chemistry – General
ABC26PH1170 · There are several types of mean molar masses for polymer and they are dependent on experimental methods like: (1) Osmometry (2) Light… · Polymer Chemistry – General
ABC26PH1202 · A constant of motion is defined by the equation: · Postulates Operators
ABC26PH1204 · The unperturbed energy levels of a system are varepsilon 0=0, varepsilon 1=2 and varepsilon 2=4. The second order correction to energy for… · Perturbation Theory
ABC26PH1205 · The energy levels for cyclobutadiene are alpha + 2 beta, alpha, alpha and alpha - 2 beta. The delocalization energy in this molecule is: · Quantum Chemistry – General
ABC26PH1207 · An operator A is defined as A=-d / dx+x. Which one of the following statements is true? · Postulates Operators
ABC26PH1208 · For a H2 molecule, the ground state wave function is psi 1,2 = phi 1,2 sigma (1, 2) where phi refers to the space part and sigma to the… · Angular Momentum
ABC26PH1209 · A hydrogenic orbital with radial function of the form r alpha exp [- beta r] and phi -part as exp [-3 i phi] corresponds to · Hydrogen Atom
ABC26PH1320 · A one-dimensional crystal of lattice dimension 'a' is metallic. If the structure is distorted in such a way that the lattice dimension is… · Band Theory
ABC26PH1370 · The term symbol for the ground state of nitrogen atoms is · Maxwell Boltzmann
ABC26PH1413 · Isothermal which has fractional coverage, linearly, dependent1 on pressure at low pressures but almost independent at high pressure is… · Adsorption Isotherms
ABC26PH1446 · A process is carried out at constant volume and at constant entropy. It will be spontaneous if: · Free Energy Equilibria
ABC26PH1447 · The chemical potential of component 1 in a solution of binary mixture is mu 1 = mu 10 + RTln p1, when p1 is the partial pressure of… · Partial Molar Quantities