89 questions from this paper that are in the bank. Each opens with its answer and explanation.
ABC26PH1187 · The condensation of hydroxy acid produces a polyster with the probability of linkage at both ends being p. The mole fraction of k-mer chain… · Polymer Chemistry – General
ABC26PH1203 · The Hermitian conjugate of operator d/dx, called (d/dx), is actually equal to · Quantum Chemistry – General
ABC26PH1277 · The eigenfunctions of the Hamiltonian H (H = T + V) of a harmonic oscillator are (where T and V are kinetic energy and potential energy… · Postulates Operators
ABC26PH1280 · Average value of momentum for the ground state of a particle in a 1-d box is zero because · Particle In A Box
ABC26PH1281 · For a hermitian operator A, which does NOT commute with the Hamiltonian H, let psi 1 be an eigenfunction of A and psi 2 be an eigenfunction… · Postulates Operators
ABC26PH1282 · The simultaneous eigen functions of angular momentum operators L2 and Lz are · Angular Momentum
ABC26PH1283 · The ionization energy of hydrogen atom in its ground state is approximately 13.6 eV. The potential energy of He^+, in its ground state is… · Hydrogen Atom
ABC26PH1284 · In simple molecular orbital theory of hydrogen molecule, bonding sigma g and anti-bonding sigma u molecular orbitals are constructed as… · Hydrogen Atom
ABC26PH1285 · The correct normalized wave function for one of the sp2 hybrid orbitals is · Hydrogen Atom
ABC26PH1286 · The orbital degeneracy of the level of a one-electron atomic system with Z=5 and energy =-13.6 eV, is · Hydrogen Atom
ABC26PH1287 · If we write a normalized wave function psi =A, then phi is also normalized when · Postulates Operators
ABC26PH1289 · The spatial part of an excited state b 3 Sigma u^+ of hydrogen molecule is proportional to [1 sigma g(1) sigma u(2) - 1 sigma g(2) sigma… · Hydrogen Atom
ABC26PH1291 · Which of the functions below is a common eigenfunction of d/dx and (d2)/(dx2) operators? · Postulates Operators
ABC26PH1292 · The two limiting wave functions of the ground state of H2^+ molecular ion, as the internuclear separation R goes to (i) ∞ (infinity) and… · Hydrogen Atom
ABC26PH1294 · Given a trial wave function psi = C1 phi 1 + C2 phi 2 and the Hamiltonian matrix elements. ∫ phi 1^* H phi 1 dv = 0, ∫ phi 1^* H phi 2 dv =… · Variation Method
ABC26PH1295 · The number of degenerate spatial orbitals of a hydrogen-like atom with principal quantum number n = 6 is · Hydrogen Atom
ABC26PH1296 · If [A, B] = 0 and [A, C] = 0, then which of the following necessarily holds: [A, B and C are operators] · Postulates Operators
ABC26PH1298 · The correct statement about the symmetry of the eigenfunctions of a quantum of 1-D harmonic oscillator is · Harmonic Oscillator
ABC26PH1299 · The correct statement about the difference of second and first excited state energies (Delta E) of a particle in 1-D, 2-D square and 3-D… · Quantum Chemistry – General
ABC26PH1301 · The electronic transition energy from pi 1 → pi 2 in propenyl radical is 4.8 eV. Within the framework of Huckel theory, the transitions… · Huckel MO Theory
ABC26PH1302 · The transition moment integral for a rotational transition between J=1; MJ=0 and J=2; MJ=0 states for a diatomic molecule along the z-axis… · Quantum Chemistry – General
ABC26PH1303 · One of the correct normalized sp2 hybrid orbitals is · Hydrogen Atom
ABC26PH1304 · Which of these is not a suitable unnormalized wave function for the excited 1s 2s electron configuration of the helium atom ? · Quantum Chemistry – General
ABC26PH1307 · A particle is in a state phi = psi 1+3 psi 2 where psi 1 and psi 2 are eigenfunctions of the Hamiltonian of the particle with eigenvalues… · Postulates Operators
ABC26PH1308 · Which of the following statements on ground state perturbation theory, involving the zeroth order energy E0(0), first order energy… · Perturbation Theory
ABC26PH1310 · The lowest energy unnormalized wave function of H2+molecule is (r1. and r2 are the distances between the electron and nuclei 1 and 2… · Quantum Chemistry – General
ABC26PH1311 · For a particle of mass m in a one-dimensional box of length 2L, the energy of the level corresponding to n = 8 is · Particle In A Box
ABC26PH1313 · A satisfactory spin wave function for an excited helium atom is · Angular Momentum
ABC26PH1315 · An unnormalized wave function of the hydrogen atom is given by r2 er / 3 (3 cos 2 theta -1). The three quantum numbers, n, 1and m… · Hydrogen Atom
ABC26PH1316 · The hydrogen atomic orbital given by Nr2 e^(-r)/3a0 (3cos 2 theta -1) represents · Hydrogen Atom
ABC26PH1317 · The degeneracy of the state having energy (27h2)/(8mL2) for a particle in a 3-D cubic box of length L is · Particle In A Box
ABC26PH1348 · In a cubic crystal, the plane [100] is equally inclined to the planes · Solid State Chemistry – General
ABC26PH1394 · The single – partition translational partition function (f) for an ideal gas in a fixed volume V depends on the thermal Broglie wave… · Partition Functions
ABC26PH1434 · When river water containing colloidal clay flows into the sea, the major cause of silting is · Colloids Micelles
ABC26PH1486 · ((∂ H)/(∂ P))T has the dimension of · Thermodynamics – General
ABC26PH1487 · For an ideal gas at 300 K · Thermodynamics – General
ABC26PH1488 · Phase diagram of a compound is shown below The slopes of the lines OA, AC and AB are tan (pi)/4, tan (pi)/6 and tan (pi)/3 respectively. If… · Phase Equilibria
ABC26OR1090 · In the following compound, the stereochemical descriptor for Ha and Hb is · Stereochemistry – General
ABC26OR1104 · At pH 10, tryptophan exists as · Natural Products – General