114 questions from this paper that are in the bank. Each opens with its answer and explanation.
ABC26IN1050 · The number of stereoisomers of trans- [CoCl2(triethylenetetraamine) ]Br is · Coordination Chemistry – General
ABC26IN1051 · An aqueous solution of [Mn (H2 O )6 ]2+ complex is pale pink in colour. The probable reasons for it are (A) Presence of 6A1g ground state… · Charge Transfer Spectra
ABC26IN1052 · Base hydrolysis of [CoCl (NH3 )5 ]2+ is an overall second order reaction, whereas that of [Co(CN)]3- is of first order. The rates depend in… · Reaction Mechanisms Substitution
ABC26IN1053 · The configuration [Ne]\,2p13p1 has a 3D term. Its levels are · Term Symbols Spectra
ABC26IN1054 · The spin-only magnetic moment and the spectroscopic ground state term symbol of manganese center in [MnF6 ]3- ion respectively, are · Term Symbols Spectra
ABC26IN1055 · The three dimensional structure of compound [Co (Co (NH3 )4(OH)2 )3 ] Br6, has · Coordination Chemistry – General
ABC26IN1056 · The spin-only and spin plus orbital magnetic moments of [CrCl6 ]3- are · Molecular Orbital Ligand Field
ABC26IN1174 · EPR spectrum of a free radical containing nuclei with nonzero nuclear spin is obtained if the following selection rules are observed- · Inorganic Spectroscopy – General
ABC26IN1209 · The correct order of the retention of cations on a sulfonated cation exchange resin column is · Lanthanides & Actinides – General
ABC26IN1210 · Hindered beta -diketonates like dpmH(dpmH= dipivaloylmethane ) are used for the separation of lanthanides because complexes formed with… · Lanthanides & Actinides – General
ABC26IN1273 · The reaction between SbF5 and two equivalents of HF leads to the formation of · Main Group Elements – General
ABC26IN1274 · Among F-, Na+, O2- and Mg2+ ions, those having the highest and the lowest ionic radii respectively are · Main Group Elements – General
ABC26IN1275 · The reaction between diphenyldichlorosilane and water in 1: 2 molar ratio gives product A which on heating above 100 C yields a cyclic or… · Main Group Elements – General
ABC26IN1276 · A borane (X) is reacted with ammonia to give a salt of borohydride (Y). The 11B NMR spectrum of Y consists of a triplet and a quintet. The… · Main Group Elements – General
ABC26IN1277 · 12-Crown-4 binds with the alkali metal ions in the following order : Li+ Na+>K+>Cs+. It is due to the · Main Group Elements – General
ABC26IN1278 · The main products of the reaction of equimolar quantities of XeF6 with NaNO3 are · Main Group Elements – General
ABC26IN1396 · The hepticities 'x' and 'y' of the arene moieties in the diamagnetic complex [ (-C6 H6 ) Ru (-C6 H6 ) ] respectively are · Metallocenes Cp Arene
ABC26IN1397 · The rate of the reaction Ni(CO)4+PPh3 Delta [Ni(CO)3 (PPh3 ) ]+CO depends on · Cluster Compounds Wade Rules
ABC26IN1398 · The product of the reaction of propene, CO and H2 in the presence of Co2(CO)8 as a catalyst is · Organometallic Compounds – General
ABC26IN1399 · The point group symmetries for trans- [Cr(en)2F2 ]+ and [TiCl6 ]3-, respectively, are · Organometallic Compounds – General
ABC26IN1400 · Co4(CO)12 adopts the · Organometallic Compounds – General
ABC26IN1401 · Reductive elimination step in hydrogenation of alkenes by Wilkinson catalyst results in (neglecting solvent in coordination sphere of Rh) · Oxidative Addition Reductive Elimination
ABC26IN1402 · Na [ (5-C5H5 )Fe(CO)2 ] reacts with Br2 to give A. Reaction of A with LiAlH4 results in B. The proton NMR spectrum of B consists of two… · Cluster Compounds Wade Rules
ABC26IN1403 · The compound that undergoes oxidative addition reaction in presence of H2, is · Oxidative Addition Reductive Elimination
ABC26IN1404 · 1H NMR spectrum of free benzene shows a peak at -7.2 ppm. The expected chemical shift (in ppm) of C6H6 ligand in 1H NMR spectrum of [… · Organometallic Compounds – General
ABC26IN1405 · According to Wade's rule, anion C2 B9 H12 adopts · 18 Electron Rule
ABC26IN1406 · The final product in the reaction of [Cp*2ThH] with CO in an equimolar ratio is · Cluster Compounds Wade Rules
ABC26IN1407 · Complexes HM(CO)5 and [ (5-C5 H5 ) M(CO)3 ]2 obey the 18-electron rule. Identify M and M and their 1H NMR chemical shifts relative to TMS. · 18 Electron Rule
ABC26OR0967 · A compound with molecular formula C4 H6 O2 shows band at 1770 cm-1 in IR spectrum and peaks at 178,68,28 and 22 ppm in 13 C NMR spectrum… · Combined Structure Elucidation
ABC26OR0968 · The mass of metastable ion produced due to decomposition of F1 + in the following mass fragmentation sequence is arrayccc Diethyl-phthalate… · Mass Spec
ABC26OR0969 · The ratio of the relative intensities of the carbon signals in the first order 13 C NMR spectrum of CD3 Cl is · NMR 13C
ABC26OR0970 · The following reactions give a product (racemic) which exhibits the following NMR data: 1 H ~ NMR: delta 2.67(2H, s), 5 . 60(2H, s) ~ p p m… · NMR 1H
ABC26OR0971 · An organic compound having molecular formula C 10 H12 O2 exhibits the following spectral data: IR: 3400 (br), 1600 cm8 □ · Combined Structure Elucidation
ABC26OR1036 · The major product of the following reaction is · Pericyclic Reactions – General
ABC26OR1076 · The cyclic product(s) of the following photochemical reaction is(are) · Photocycloaddition
ABC26PH0870 · Identify the speed distribution functions of Ne, Ar, and Kr with the curves in the figure below 1 · Atomic And Molecular Term Symbols – General
ABC26PH0912 · For an enzyme-substrate reaction, a plot between 1 / v and 1 / [S0 ] yields a slope of 40 s . If the enzyme concentration is 2.5 mu M, then… · Enzyme Kinetics
ABC26PH0913 · For a gaseous reaction, 2 NO(g)+Cl2(g) Non-linear T.S. 2 NOCl the pre-exponential factor in the rate constant is proportional to · Arrhenius Activation
ABC26PH0914 · The rate constant for a reaction A3++Bn+1 P is measured in two different aqueous solutions of ionic strengths 0.01 M and 0.04 M . If K0.04… · Rate Laws Order
ABC26PH0915 · A reaction A+B+C D follows the mechanism arrayl A+B AB \\ AB+C D array in which first step remains essentially in equilibrium. If Delta H… · Arrhenius Activation
ABC26PH0916 · Which of the following will result in deviation from Beer's law ? 1. Change in refractive index or medium. 2. Dissociation of analyte on… · Chemical Kinetics – General
ABC26PH0993 · For the cell reaction, Sn(s)+Sn4+(aq) 2 Sn2+(aq), separate electrode reactions could be written with the respective standard electrode… · Nernst Cells
ABC26PH0994 · Fuel cells provide clean electrical energy to a variety of applications including automobiles and stationary power sources. Normally… · Electrochemistry – General
ABC26PH1059 · The point group symmetries for trans- [Cr(en)2 F2 ]+ and [TiCl 6]3-, respectively, are · Symmetry Elements Point Groups
ABC26PH1060 · The character table of C2 v point group is given below. In cis-butadiene molecule the vibrational modes belonging to A2 irreducible… · Character Tables
ABC26PH1061 · The product sigma xy . S4z (S4z . is the four fold improper axis of rotation around the z-axis, and sigma xy is the reflection in the xy… · Symmetry Elements Point Groups
ABC26PH1112 · Bond lengths of homonuclear diatomic molecules can be determined with the help of both · Vibrational
ABC26PH1113 · If the component of the orbital angular momentum along the molecular axis of a heteronuclear diatomic molecule is non-zero, the… · Vibrational
ABC26PH1114 · If the bond length of a heteronuclear diatomic molecule is greater in the upper vibrational state, the gap between the successive… · Molecular Spectroscopy – General
ABC26PH1177 · The fraction of groups condensed at time in any stepwise condensation polymerization (overall second order) reaction is · Polymerisation Kinetics