CSIR NET Collected papers 2020–2021 · chemistry questions

9 questions from a source that prints this span of years rather than the year of each question. Each opens with its answer and explanation.

ABC26PH1160 · In linear variation method using two orthogonal basis functions, the two roots obtained are epsilon 0 and epsilon 1 (epsilon 0 < epsilon… · Quantum Chemistry – General
ABC26PH1162 · For a model system of three non-interacting electrons confined in a two dimensional square box of length L, the ground state energy in… · Quantum Chemistry – General
ABC26PH1163 · Consider a particle on a ring that is perturbed by interacting with an applied electric field (E) with the perturbation being H′= mu E cos… · Quantum Chemistry – General
ABC26PH1164 · For an electron in 1s orbital of He^+, the average value of r, r is · Quantum Chemistry – General
ABC26PH1165 · Let the Hamiltonian H, in one-dimension, be H = (px2)/2m + V(x). The commutator of H with x, [H, x], is · Quantum Chemistry – General
ABC26PH1166 · The commutator, [x, px2] is equivalent to · Quantum Chemistry – General
ABC26PH1167 · The total pi -electron density on the four carbon atoms of trans butadiene are in the ratio · Quantum Chemistry – General
ABC26PH1168 · Consider an electron me=9.1 × 10-31 kg having energy 13.6 eV, confined in an infinite potential well. If the potential energy inside the… · Quantum Chemistry – General
ABC26PH1169 · When a hydrogen atom is exposed to a perturbation V = E.z, the first order correction to the wave function comes only from the orbital · Quantum Chemistry – General