88 questions from this paper that are in the bank. Each opens with its answer and explanation.
ABC26OR1035 · The major product formed in the following reaction is Delta · Pericyclic Reactions – General
ABC26PH0909 · In the Lineweaver-Burk plot of (initial rate)-1 vs. (initial substrate concentration)-1 for an enzyme catalysed reaction following… · Enzyme Kinetics
ABC26PH0911 · For a first order reaction A → products, the plot of ln (([A]t)/([A]0)) vs time, where [A]0 and [A]t to concentration at time =0 and t… · Rate Laws Order
ABC26PH0961 · For a set of 10 observed data points, the mean is 8 and the variance is 0.04. The 'standard deviation' and the 'coefficient of variation'… · Error Propagation
ABC26PH0991 · Solutions of three electrolytes have the same ionic strength and different dielectric constants as 4, 25 and 81. The corresponding relative… · Debye Huckel
ABC26PH1176 · In radical chain polymerization the quantity given by the 'rate of monomer depletion, divided by the rate of propagating radical formation'… · Polymerisation Kinetics
ABC26PH1248 · The commutator of the kinetic energy operator, Tx and the momentum operator, px for the one-dimensional case is · Postulates Operators
ABC26PH1249 · Consider a particle confined in a cubic box. The degeneracy of the level, that has an energy twice that of the lowest level, is · Quantum Chemistry – General
ABC26PH1251 · The ground state energy of hydrogen atom is -13.598 eV. The expectation values of kinetic energy, <T> and potential energy,, in units of… · Postulates Operators
ABC26PH1252 · If phi =0.8 phi A+0.4 phi B is a normalized molecular orbital of a diaotmic molecule AB, constructed from phi A and phi B which are also… · Huckel MO Theory
ABC26PH1253 · If the ionization energy of H atom is x, the ionization energy of Li+2 is · Quantum Chemistry – General
ABC26PH1255 · A particle in a one dimensional harmonic oscillator in x-direction is perturbed by a potential lambda x (lambda is number). The first-order… · Harmonic Oscillator
ABC26PH1256 · The spatial part of the wave function of the atom in its ground state is 1s(1)1s(2). The spin part would be · Angular Momentum
ABC26PH1260 · The operators S_± are defined by S_± = Sx ± iSy where Sx and Sy are components of the spin angular momentum operator. The commutator [Sx… · Angular Momentum
ABC26PH1261 · A quantum particle with fixed initial energy E0 < V is allowed to strike the following four barriers separately. The transmission… · Quantum Chemistry – General
ABC26PH1263 · A Slater determinant corresponding to the ionic part of the ground state valence bond wave function of H2 molecule is (1 sa alpha, 1 sa… · Hydrogen Atom
ABC26PH1264 · An eigen state of energy satisfy H psi n = En psi n. In the presence of an extra constant potential V0 · Quantum Chemistry – General
ABC26PH1265 · The simplest ground-state VB wave function of a diatomic molecule like HCl is written as psi = psi H(1 s, 1) psi Cl (3 pz, 2)+B where B… · Quantum Chemistry – General
ABC26PH1266 · Which of the following statement is INCORRECT? · Angular Momentum
ABC26PH1267 · Compare the difference of energies of the first excited and ground states of a particle confined in (i) a 1-d box (Delta 1), (ii) a 2-d… · Quantum Chemistry – General
ABC26PH1268 · The correct statement about both the average value of position x and momentum p of a 1-d harmonic oscillator wave function is · Harmonic Oscillator
ABC26PH1269 · The value of the commutator [x, [x, px]] is · Postulates Operators
ABC26PH1270 · A particle is in a one-dimensional box with a potential Vo inside the box and infinite outside. An energy state corresponding to n=0 (n=… · Quantum Chemistry – General
ABC26PH1271 · Two different non-zero operators A and B (A) satisfy the relation (A+B)(A-B)=A2-B2 · Postulates Operators
ABC26PH1272 · The degeneracy of an excited state of a particle in 3-dimensional cubic box with energy 3 times its ground state energy is · Quantum Chemistry – General
ABC26PH1273 · sp hybrid orbitals are of the form C1 2 s+C2 2 pz (2 s. and 2 pz are normalised individually). The coefficients of the normalized form of… · Hydrogen Atom
ABC26PH1274 · A certain 2-level system has stationary state energies E1 and E2 (E1<E2) with normalized wave functions phi 1 and phi 2 respectively. In… · Perturbation Theory
ABC26PH1275 · The radial part of a hydrogenic wave function is given as r(alpha -r) e- beta r (alpha, beta are constants). This function is then… · Hydrogen Atom
ABC26PH1340 · When Si is doped with a Group V element · Band Theory
ABC26PH1341 · The interplanar spacing of (110) planes in a cubic unit cell with lattice parameter a = 4.242 Å is · Crystal Systems Lattices
ABC26PH1342 · A compound AxBy has a cubic structure with A atoms occupying all the corners of the cube as well as all the face center positions. The B… · Solid State Chemistry – General
ABC26PH1383 · The translational, rotational and vibrational partition functions for a molecule are ftranslation = 1010 m-1, frotation =10, fvibration =1… · Partition Functions
ABC26PH1384 · The number of configurations in the most probable state, according to Boltzmann formula, is · Statistical Equilibrium
ABC26PH1425 · For the non dissociative Langmuir type adsorption of a gas on a solid surface at a particular temperature, the fraction of surface coverage… · Adsorption Isotherms
ABC26PH1469 · The figure below represents the path followed by a gas during expansion from A → B. The work done is (L atm) · Thermodynamics – General
ABC26PH1470 · Two phases alpha and beta of a species are in equilibrium. The correct relations observed among the variables, T, p and mu are · Thermodynamics – General
ABC26PH1471 · In a bomb calorimeter, the combustion of 0.5 g of compound A (molar mass = 50 g mol-1) increased the temperature by 4 K. If the heat… · Laws State Functions
ABC26PH1472 · The number of phases, components and degrees of freedom, when Ar is added to an equilibrium mixture of NO, O2 and NO2 in gas phase are… · Thermodynamics – General