114 questions from this paper that are in the bank. Each opens with its answer and explanation.
ABC26IN1389 · The ligand(s) that is (are) fluxional in [ (5-C5 H5 ) (-C5 H5 ) Fe(CO)2 ] in the temperature range 221-298\,K, is (are) · Organometallic Compounds – General
ABC26IN1390 · The typical electronic configurations of the transition metal centre for oxidative addition · Oxidative Addition Reductive Elimination
ABC26IN1391 · The oxidation state of Ni and the number of metal-metal bonds in [Ni2(CO)6 ]2- that are consistent with the 18 electron rule are · 18 Electron Rule
ABC26IN1392 · The compound [Re2 (Me2 PPh )2 Cl4 ](M) having a configuration of sigma 2 pi 4 delta 2 delta *2 can be oxidized to M+ and M2+. The formal… · Metal Carbonyls
ABC26IN1393 · The total valence electron count and the structure type adopted by the complex [Fe3(CO)15C ] respectively, are · 18 Electron Rule
ABC26IN1394 · 1H NMR spectrum of [5-C5H5Rh)(C2H4)2] at -20 shows a typical AA' XX' pattern in the olefinic region. On increasing the temperature to -70… · Metal Carbonyls
ABC26IN1395 · Amongst the following which is not isolobal pairs · Organometallic Compounds – General
ABC26OR0964 · The correct 13 C NMR chemical ( delta ) shift values of carbons labeled a-e in the following ester are · NMR 13C
ABC26OR0965 · An organic compound gives following spectral data: IR : 2210, 1724 cm-1, 1 H NMR: delta 1.4(t, J=7.1 Hz, 3 H), 4.4(q, J=7.1 Hz, 2 H) ; 13 C… · Combined Structure Elucidation
ABC26OR0966 · The mass spectrum of the product A, formed in the following reaction, exhibits M, M + 2, M + 4 peaks in the ratio of about 1 : 2 : 1. The… · Mass Spec
ABC26OR1033 · In a Diels-Alder reaction, the most reactive diene amongst the following is · Cycloaddition Diels Alder
ABC26OR1034 · Pericyclic reaction involved in one of the steps of the following reaction sequence is · Sigmatropic Shifts
ABC26OR1035 · The major product formed in the following reaction is Delta · Pericyclic Reactions – General
ABC26OR1074 · The major product formed in the following photochemical reaction is · Photocycloaddition
ABC26OR1075 · Amongst the following, the major products formed in the following photochemical reactions are A B C D · Photocycloaddition
ABC26PH0908 · Examine the following first order consecutive reactions. The rate constant (in s-1 units) for each step is given above the arrow mark… · Rate Laws Order
ABC26PH0909 · In the Lineweaver-Burk plot of (initial rate) -1 vs. (initial substrate concentration) -1 for an enzyme catalysed reaction following… · Enzyme Kinetics
ABC26PH0910 · The fluorescence lifetime of a molecule in a solution is 5 10-9 s. The sum of all the noradiative rate constants ( Sigma knr ) for the… · Rate Laws Order
ABC26PH0911 · For a first order reaction A products, the plot of ([A]t[A]0 ) vs time, where [A]0 and [A]t to concentration at time =0 and t respectively… · 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
ABC26PH0990 · In the graph below, the correct option, according to Kohlrausch law, is · Conductance
ABC26PH0991 · Solutions of three electrolytes have the same ionic strength and different dielectric constants as 4 , 25 and 81 . The corresponding… · Debye Huckel
ABC26PH0992 · Given; arrayl A. Fe(OH)2(s) + 2e- Fe(s) + 2OH-(aq) \ ;\ E0=-0.877\,V \\ B. Al3+(aq) + 3e- Al(s) \ ;\ E0=1.66\,V \\ C. AgBr(aq) + e- Ag(s) +… · Electrochemistry – General
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
ABC26PH1250 · A particle in a one-dimensional box (potential zero between to a and infinite outside) has the ground state energy E0=0.125 h2m a2. The… · Postulates Operators
ABC26PH1251 · The ground state energy of hydrogen atom is -13.598 eV . The expectation values of kinetic energy, <T> and potential energy, <V>, in units… · Postulates Operators
ABC26PH1252 · If phi =0.8 +0.4 is a normalized molecular orbital of a diaotmic molecule AB, constructed from and which are also normalized, the overlap… · Huckel MO Theory
ABC26PH1253 · If the ionization energy of H atom is x , the ionization energy of Li2+ is · Quantum Chemistry – General
ABC26PH1254 · Simple Huckel molecular orbital theory · Huckel MO Theory
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 1 s(1) 1 s(2). The spin part would be · Angular Momentum
ABC26PH1257 · For a particle of mass m confined in a box of length L, assume Delta x=L. Assume further that Delta p( )= 2 1 / 2. Use the uncertainity… · Particle In A Box
ABC26PH1258 · The angular momentum operator Lz=-i ()/( phi ) has eigen functions of the form (iA phi ). The condition that a full rotation leaves such an… · Angular Momentum
ABC26PH1259 · A particle in a 1-dimensional box of length L is perturbed by a delta function potential, delta (x-L / 2), in the middle of the box. The… · Particle In A Box
ABC26PH1260 · The operators S defined by S =Sx iSy where Sx and Sy are components of the spin angular momentum operator. The commutator [Sx, S+ ]is · Angular Momentum
ABC26PH1261 · A quantum particle with fixed initial energy E0<V is allowed to strike the following four barriers separately. The transmission probability… · Quantum Chemistry – General
ABC26PH1262 · For some one-electron system with l=0 and m=0, the functions N0 e- sigma and N1(2- sigma ) e- sigma refer respectively to the ground (E0 )… · Variation Method
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 =En . 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 =(1 s, 1) (3 pz, 2 )+B where B stands for · 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 (1 ), (ii) a 2-d square… · 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 B) 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