126 questions from this paper that are in the bank. Each opens with its answer and explanation.
ABC26PH1068 · The point group obtained by adding symmetry operation to the point group C4 is · Symmetry Elements Point Groups
ABC26PH1069 · The character table for the D4 point group is provided below: For this point group, the correct statement among the following is: · Character Tables
ABC26PH1070 · The character table of C3 v point group is provided below, along with an additional reducible representation, is given by · Reducible Representations
ABC26PH1071 · The molecule that possesses symmetry S4 element is · Group Theory – General
ABC26PH1072 · For H2O molecule, the electronic transition from the ground state to an excited state of B1 symmetry is · Group Theory – General
ABC26PH1073 · The pair of symmetry point groups that are associated with only polar molecules is · Symmetry Elements Point Groups
ABC26PH1171 · The osmotic pressure ( pi ) of a polymer sample at different concentrations (c) was measured at T(K). A plot of ( pi / c) versus c gave a… · Molecular Weight Averages
ABC26PH1172 · The addition polymerization of M (monomer) involves the following stages: ( I= initiator, R= free radical) The rate constant for free… · Polymerisation Kinetics
ABC26PH1210 · Identify which of the following operators is not hermitian? · Postulates Operators
ABC26PH1211 · A particle is constrained in a one dimensional box of length 2 a with potential V(x)= ; x<-a, x>a and V(x)=0 ;-a x a. Energy difference… · Particle In A Box
ABC26PH1212 · For the eigen states of the hydrogen atom, which of the following relations between the expectation value of kinetic energy (T) and… · Postulates Operators
ABC26PH1213 · Which of the following is true for the radial part of the hydrogen atom wave functions Rn 1(r) ( n principal quantum number) and the nodes… · Hydrogen Atom
ABC26PH1214 · For non-degenerate perturbation theory for ground state, with E0(0) as zeroth order energy, E0(1) as the first-order perturbation… · Perturbation Theory
ABC26PH1215 · An excited triplet state wave function of hydrogen molecule with the electronic configuration 1 1 has the following space part · Quantum Chemistry – General
ABC26PH1321 · The value of d111 in a cubic crystal is 325.6 pm . The value of d333 is · Solid State Chemistry – General
ABC26PH1322 · Consider a n-type semiconductor whose Ev=0, EC=2.0\,eV and ED=1.98\,eV. The correct statement among the following is · Band Theory
ABC26PH1371 · PA and PB denote the populations of two energy states EA and EB and EA>EB, The correct statement when the temperature T1>T2 is · Statistical Thermodynamics – General
ABC26PH1372 · A system consisting of 4 identical and distinguishable particles, each possessing three available states of 1 , 2 and 3 units, has 10 units… · Statistical Thermodynamics – General
ABC26PH1414 · Flocculation value of K2 SO4 is much less than that of KBr for Sol A . Floccultion value of CaCl2 is much less than that of NaCl for Sol B… · Surface Chemistry – General
ABC26PH1415 · The Langmuir adsorption isotherm is given by kp/(1+kp), where P is the pressure of the adsorabate gas. The Langmuir adsorption isotherm for… · Adsorption Isotherms
ABC26PH1426 · Hydrogen is adsorbed on many metal surfaces by dissociation (S represents a surface site)- If the pressure of H2(p) is small, the fraction… · Surface Chemistry – General
ABC26PH1448 · For a system of constant composition, the pressure (P) is given by. · Thermodynamics – General
ABC26PH1449 · For the reaction C2 H4(g)+3 O2(g) 2 CO2(g)+2 H2 O(l), the value of Delta H- Delta U (in kJ ) at 300 K and 1bar is · Thermodynamics – General
ABC26PH1450 · 1 mol of CO 2,1 mol of N 2 and 2 mol of O 2 were mixed at 300 K . The entropy of mixing is · Laws State Functions
ABC26PH1451 · For the liquid vapour equilibrium of a substance dP / dT at 1 bar and 400 K is 8 10-3 bar K-1. If the molar volume in the vapour form is… · Laws State Functions
ABC26PH1452 · For the reaction H2 O(g)+C (graphite) CO(g)+H2 O(g), the variation of energy parameter Delta G0, Delta H0 and T Delta S0 of the reaction… · Thermodynamics – General