101 questions from this paper that are in the bank. Each opens with its answer and explanation.
ABC26IN1142 · The value of magnetic moment will be independent of temperature for(acac = acetylacetonato; OAc = acetate; o-phen = o-phenathroline; Pz =… · Coordination Chemistry – General
ABC26IN1143 · In the following sequence of reactions the correct P, Q and R are respectively · Reaction Mechanisms Substitution
ABC26IN1144 · The term symbol for the ground state of dinitrogen cation radical (N2 )+is · Term Symbols Spectra
ABC26IN1145 · The calculated heat of formation ( Delta Hf ) for NaCl2 and CaF is · Coordination Chemistry – General
ABC26IN1224 · The coordination number of Gd in GdCl3 .6 H2 O is · Lanthanides & Actinides – General
ABC26IN1309 · The species that results by replacing one quarter of Si(IV) in pyrophyllite [Al2(OH)2 Si4 O10 ] with Al(III) [charge balance by K(1)] is · Main Group Elements – General
ABC26IN1310 · The oxidation state of sulphur in the dithionous and dithionic acids, respectively, are · Main Group Elements – General
ABC26IN1311 · In the synthesis of polydimethylsiloxane, the chain forming, branching and terminating agents respectively, are · Main Group Elements – General
ABC26IN1312 · The correct statements regarding Boron among the following (1) Nuclear spin of 11 B is greater than that of 10 B (II) The polarities of B-H… · Main Group Elements – General
ABC26IN1313 · Choose the correct statement(s) among the following (I) LiF is more soluble than LiClO4 in water. (II) The standard reduction potential… · Main Group Elements – General
ABC26IN1314 · Choose the correct statement(s) among the following (1) The dihedral angle in O2F2 is 0 . (II) OF2 is generally prepared by reacting… · Main Group Elements – General
ABC26IN1329 · In neutron activation analysis the radiation commonly detected is · Nuclear Chemistry – General
ABC26IN1483 · The number of Ni-Ni bonds in [CpNi ( mu -PPh2 ) ]2 complex obeying the 18 electron rule is · 18 Electron Rule
ABC26IN1484 · For the reaction of trans- [IrX(CO)(PPh3)2 ] (X=F, Cl, Br, I) with O2, correct order of variation of rate with X is · Organometallic Compounds – General
ABC26IN1485 · The organic species isolobal to [Fe(CO)2 (PPh3 ) ]-is · Organometallic Compounds – General
ABC26IN1486 · The correct statements about [Ru6 C(CO)17 ] cluster from the following (1) it is an 86 electron cluster (2) it is a closo structure type… · 18 Electron Rule
ABC26IN1487 · A plausible structure of the intermediate involved in the following reaction [Fe(5-C5H5)(CH3)(CO)2] + PPh3 [Fe(5-C5H5)(C(=O)CH3)(CO)(PPh3)] · Organometallic Compounds – General
ABC26IN1488 · Consider the following reactions: 23 The reaction(s) which will NOT produce ethane as a product is/are · Cluster Compounds Wade Rules
ABC26IN1489 · Considering sigma -bonding only, in the MO diagram of a metal complex with trigonal bipyramidal (TBP) geometry, the d-orbitals which remain… · Metal Carbonyls
ABC26OR0999 · The number of ' H NMR signals observed for the following compound is · Organic Spectroscopy – General
ABC26OR1000 · The compound that will show a base peak at m / z 120 in its EI mass spectrum is · Mass Spec
ABC26OR1001 · The compound that exhibits the following spectral data is IR: () 1685\,cm-1; 1H NMR: delta = 7.84 (d, J=8 Hz, 2H), 7.60 (d, J=8 Hz, 2H)… · Combined Structure Elucidation
ABC26OR1057 · The major product formed in the following reaction is: Delta · Pericyclic Reactions – General
ABC26OR1083 · Structures of the products A and B in the following photo-deprotection reactions are: · Photocycloaddition
ABC26OR1084 · The major product formed in the following reaction is: · Photocycloaddition
ABC26PH0951 · If the half-life of a reaction is inversely proportional to the square of the concentration of the reactant, the order of the reaction is · Rate Laws Order
ABC26PH0952 · The gas phase decomposition of A at 1000K follows two decomposition paths. The maximum theoretical percentage yield of P at 1000K is · Rate Laws Order
ABC26PH0967 · A physical observable, 'x', appears with the probability distribution e(-|2 x-12|) the average of x would be · Data Analysis – General
ABC26PH1019 · The mobility of a divalent cation in water is 8 10-8 m2 V-1 S-1. The effective radius of the ion is (viscosity of water =1 cP ; e=1.6 10-19… · Electrochemistry – General
ABC26PH1020 · If the over potential of an electrolysis process is increased from 0.5V to 0.6V, then the ratio of current densities ( J0.6J0.5 ) of the… · Electrochemistry – General
ABC26PH1082 · The pi -orbital p1+p2-p3-p4 of cis-butadiene belongs to the irreducible representation · Character Tables
ABC26PH1083 · The number of times A1 representation appears in the representation of the C2 v point group given below is · Symmetry Elements Point Groups
ABC26PH1142 · The correct statements about HCl and DCl , among the following is · Molecular Spectroscopy – General
ABC26PH1143 · The Berge-Sponer plot between Delta Gv+1/2= (+1- ) and v+1 for CO in a straight line with slope of -14 cm-1 and intercept of 2170 cm-1. The… · Vibrational
ABC26PH1195 · The degree of polymerisation (<N>) and the fraction of monomer consumed (P) for apolymerization reaction are related as · Polymerisation Kinetics
ABC26PH1196 · The reaction rate of a self-catalyzed polyesterification reaction is given as -(d[COOH])/dt=k[COOH]2[OH] If [M] is the initial… · Polymerisation Kinetics
ABC26PH1360 · The correct relationship among the following, for a tetragonal (a=b c, alpha = beta = gamma =90 ) crystal system, is · Crystal Systems Lattices
ABC26PH1361 · Nearest neighbour distance in a crystal system of side length a is a√(2) in · Crystal Systems Lattices
ABC26PH1368 · A certain system of non interacting particles has the single-particle partition function f=A TmV where A is some constant. The average… · Partition Functions
ABC26PH1404 · The rotational partition function is expected to be the smallest for the molecule, among the following · Partition Functions
ABC26PH1405 · For a linear molecule the mean energies for translation, rotation (T ) and vibration (T ) follow ratio: · Statistical Thermodynamics – General
ABC26PH1406 · The populations of proton spins in the highest energy level of a sample in magnetic fields of 1.5T and 7.0 T are N' and N, respectively… · Statistical Thermodynamics – General
ABC26PH1407 · The difference between standard molar entropies of two mono-atomic gases (A) and (B) (Sm, A0-Sm, B0 ) at a given temperature is (given that… · Statistical Thermodynamics – General
ABC26PH1437 · Above the critical micelle concentration (CMC), the option which correctly describes the variation of molar conductivity with increase in… · Colloids Micelles
ABC26PH1511 · One mole of a mono-atomic ideal gas is transformed from 300 K and 2 atm to 600 K and 4 atm . The entropy change for this process is · Laws State Functions
ABC26PH1512 · A non-ideal gas, follows the equation P=R TVm [1+BVm ] where B is a function of temperature only. The deviation in internal energy from… · Laws State Functions
ABC26PH1513 · When two moles of liquid A are mixed with two moles of liquid B at 300 K , the excess molar Gibbs energy of the solution is -1.5 kJ mol-1… · Free Energy Equilibria
ABC26PH1514 · A sample of 2.0 moles of O2(g) (assumed ideal) at 500 K is expanded from 5 L to 50 L under adiabatic and reversible conditions. The change… · Laws State Functions
ABC26PH1515 · The chemical potential ( mu ) of a 2 molar Na2 SO4 solution is expressed in terms of mean ionic activity co-efficient ( ) as · Partial Molar Quantities
ABC26OR1095 · The most stable conformation of the following molecule is: · Quanta Point – General