126 questions from this paper that are in the bank. Each opens with its answer and explanation.
ABC26IN0998 · Observe the following electronic transition of a diatomic molecule. (A) 1+ 3+ (B) 1+ 1+ (C) 1 1+ (D) 1 1+ The allowed transitions are · Electron Transfer Redox
ABC26IN0999 · The electronic spectrum of [CrF6 ]3- shows three bands at 14,900 cm-1, 22400 cm-1 and 34,800 cm-1. The value of in this case is: · Electron Transfer Redox
ABC26IN1000 · A true statement about base hydrolysis of [Co (NH3 )5 Cl ]2+ is: · Reaction Mechanisms Substitution
ABC26IN1001 · The correct order of d-orbital splitting in a trigonal bipyramidal geometry is: · Molecular Orbital Ligand Field
ABC26IN1002 · For the following outer sphere electron transfer reactions. arrayl [Co (NH3 )6 ]2++ [Co* (NH3 )6 ]3+ [Co (NH3 )6 ]3++ [Co* (NH3 )6 ]2+ \\… · Electron Transfer Redox
ABC26IN1003 · The coordination number and geometry of cerium in [Ce (NO3 )6 ]2- are respectively, · Coordination Chemistry – General
ABC26IN1156 · In the 19 F NMR spectrum of PF5, the number of signals and multiplicity, at room temperature are · Inorganic Spectroscopy – General
ABC26IN1157 · In 57Fe Mossbauer experiment, source of 14.4 keV (equivalent to 3.48 1012 MHz) is moved towards absorber at a velocity of 2.2\ mm\,s-1. The… · Mossbauer
ABC26IN1199 · The actual magnetic moment shows a large deviation from the spin-only formula in the case of · Lanthanides & Actinides – General
ABC26IN1233 · The correct statement regarding closo-\BnHn\ species is: · Boranes Carboranes
ABC26IN1234 · Lewis acidity of BCl3, BPh3 and BMe3 with respect to pyridine follows the order · Main Group Elements – General
ABC26IN1235 · Among the following pairs arrayll (1)\ oxygen-sulfur & (2)\ nitrogen-phosphorus \\ (3)\ phosphorus arsenic & (4)\ chlorine-iodine array… · Main Group Elements – General
ABC26IN1236 · The reaction between NH4 Br and Na metal in liquid ammonia (solvent) results in the products · Main Group Elements – General
ABC26IN1237 · The material that exhibits the highest electrical conductivity among the following sulfur - nitrogen compounds is · Phosphazenes Sn Compounds
ABC26IN1238 · The final product (s) of the reaction P(OR)3+R X is/are · Main Group Elements – General
ABC26IN1239 · A Sodalite cage in zeolites is · Ring Cage Cluster
ABC26IN1240 · The styx code of B4 H10 is: · Main Group Elements – General
ABC26IN1241 · Bayer's process involves. · Main Group Elements – General
ABC26IN1340 · For the nuclear reactions. (A) 48Be 2\,24He (B) 3680Kr 2\,1840Ar (Given masses: 8Be = 8.005300, 4He = 4.002603 and 3680Kr = 79.81638… · Nuclear Reactions Q Value
ABC26IN1345 · Among the metals Mn, Fe, Co and Ni , the ones those would react in its native form directly with CO giving metal carbonyl compounds are: · 18 Electron Rule
ABC26IN1349 · The correct combination of metal, number of carbonyl ligands and the charge for a metal carbonyl complex [M(CO)x]z- that satisfies the 18… · 18 Electron Rule
ABC26IN1350 · The stable cyclopentadienyl complex of beryllium is · Organometallic Compounds – General
ABC26IN1351 · Reaction of Fe(CO)5 with OH leads to complex A which on oxidation with MnO2 gives B . Compounds A and B respectively are · Cluster Compounds Wade Rules
ABC26IN1352 · The number of metal-metal bonds in the dimers, [CpFe(CO)(NO)]2 and [CpMo(CO)3 ]2 respectively, are · Metal Carbonyls
ABC26IN1353 · In the trans- PtCl2 L(CO) complex, the CO stretching frequency for L=NH3, pyridine, NMe3 decreases in the order. · Organometallic Compounds – General
ABC26IN1354 · The catalyst involved in carrying out the metathesis of 1-butene to give ethylene and 3-hexene is: · Organometallic Compounds – General
ABC26IN1355 · The greater stability of ( (CH3 )3 C-CH2 - )4 Ti(A) compared to that of ( (CH3 )2 CH-CH2 - )4 Ti(B) is due to · Oxidative Addition Reductive Elimination
ABC26IN1356 · A compound A having the composition FeC9H8O3 shows one signal at 2.5 ppm and another one around · Organometallic Compounds – General
ABC26OR0946 · In the mass spectrum of dodecahedron (C20 H20 ), approximate ratio of the peaks at m / z=260 and 261 is · Mass Spec
ABC26OR0947 · An organic compound (MF=C 8 H10 O ) exhibited the following 1 H NMR spectral data: delta 2.5 (3 H, s), 3.8(3 H, s), 6.8(2 H, d, J=8 Hz)… · Combined Structure Elucidation
ABC26OR0948 · An organic compound having molecular formula C 15 H14 O exhibited the following 1 H and 13 C NMR spectral data. 1 H ~ N M R ~ : ~ delta… · Combined Structure Elucidation
ABC26OR0949 · Appropriate 1 H ~ NMR chemical shifts ( delta ) for the protons A-D for the following compound are · NMR 1H
ABC26OR1017 · In the following concerted reaction, the product is formed by a Delta · Electrocyclic
ABC26OR1018 · The major products A and B in the following reaction sequence are Delta · Pericyclic Reactions – General
ABC26OR1019 · The product formed and the process involved in the following reaction are · Sigmatropic Shifts
ABC26OR1069 · Match the following starting compounds with corresponding products in photochemical reactions: Starting material / Products (i) (A) (ii)… · Photocycloaddition
ABC26PH0869 · Two alpha particles having speeds S1 and S2 have kinetic energies 1 and 2 MeV respectively; the relationship between S1 and S2 is : · Atomic And Molecular Term Symbols – General
ABC26PH0876 · The concentration of a reactant undergoing decomposition was 0.1, 0.08 and 0.067 mol L-1 after 1.0, 2.0 and 3.0 hr respectively. The order… · Rate Laws Order
ABC26PH0877 · The overall rate of the following complex reaction, arrayl 2 A k1k2 A2 (fast equilibrium) \\ A+B k2 C (fast equilibrium) \\ A2+C k3 P+2 A… · Steady State Approximation
ABC26PH0878 · The concentration of a reactant undergoing decomposition was 0.1, 0.08 and 0.067 mol L-1 after 1.0, 2.0 and 3.0 hr respectively. The order… · Chemical Kinetics – General
ABC26PH0879 · At any temperature for the following reaction (D and T are deuterium and tritium respectively) correct statement is: (A) HCl+F HF+Cl, (B)… · Chemical Kinetics – General
ABC26PH0880 · An example of a relaxation method of measuring rates is: · Chemical Kinetics – General
ABC26PH0954 · In least square fitting of a data set \Xi Yi \ to the equation Y= A.X, the regression coefficient (A) is estimated by · Regression Fitting
ABC26PH0971 · Which one of the following conductometric titrations will show a linear increase of the conductance with volume of the titrant added up to… · Conductance
ABC26PH0972 · For a potentiometric titration, in the curve of emf (E) vs volume (V) of the titrant added, the equivalence point is indicated by · Nernst Cells
ABC26PH0973 · The standrad electrode potentials (E ) of Fe3+ / Fe2+ and Fe2+ / Fe electrodes are +0.77 V and -0.44 V respectively at 300 K . The E of… · Nernst Cells
ABC26PH0974 · The overall reaction for the passage of 1.0 faraday of charge in the following cell Ag(s)-AgCl(s) |KCl (a1 ) | KCl (a2 ) AgCl(s)-Ag(s) is… · Conductance
ABC26PH1065 · The molecule diborane belongs to the symmetry point group · Symmetry Elements Point Groups
ABC26PH1066 · The irreducible representations of C2 h are Ag, Bg, Au and Bu. The Raman active modes of trans- 1, 3 butadiene belong to the irreducible… · Character Tables
ABC26PH1067 · The symmetry point group of the most stable geometry of the following molecule Cl(H) C=C=C(H) Cl is · Symmetry Elements Point Groups