86 questions from this paper that are in the bank. Each opens with its answer and explanation.
ABC26IN0009 · For the reaction, HX (aq)+H2O(l) gives H3O^++X^- the highest value of [X^-], when X^- is · Acid and Bases – General
ABC26IN0022 · The primary analytical method (not using a reference) is: · Analytical Chemistry – General
ABC26IN0067 · The oxidation state of gold in the following complex is · Chemical Bonding – General
ABC26IN0068 · The numbers of triangular faces in square antiprism, icosahedron and tricapped trigonal prism (capped on square faces), respectively, are · Chemical Bonding – General
ABC26IN0164 · The expected number of 19F NMR spectral lines, including satellites, for [XeF5]- is [Abundance of 129Xe (I = 1/2) = 26%] · Electronic Spectra Tanabe Sugano
ABC26OR0044 · The correct statement about the following compound is · Stereochemistry R S E Z
ABC26OR0045 · Methyl groups in the following compound are · General Organic Chemistry – General
ABC26OR0106 · Correct characteristics of the functional groups of adenine in DNA base pair are · Natural Products – General
ABC26OR0107 · The correct match for the following is · Steroids
ABC26OR0129 · 1H NMR spectrum of an organic compound recorded on a 500 MHz spectrometer showed a quartet with line positions at 1759, 1753, 1747, 1741… · NMR 1H
ABC26OR0309 · The most stable product formed in the following reaction is · Named Reactions
ABC26OR0312 · The major product formed in the following reaction is: ii) ICH2CH2Cl · Named Reactions
ABC26OR0322 · The major product in the following reaction is THF, r.t · Named Reactions
ABC26OR0325 · The correct starting compound A in the following reaction is (A) cat. CH3CH2CO2H, heat · Named Reactions
ABC26OR0327 · The major product in the following reaction is H+ · Named Reactions
ABC26PH0009 · The highest molecular orbitals for an excited electronic configuration of the oxygen molecule are [1 pi g]1[3 sigma u]1. A possible… · Molecular Term Symbols
ABC26PH0041 · According to the transition state theory, the plot with slope equal to (Delta H)/R is · Chemical Kinetics – General
ABC26PH0043 · For two reactions X(g)+Y(g) → Z(g) (1) M(g)+N(g) → P(g) (2) according to the collision theory, the ratio of squares of pre-exponential… · Arrhenius Activation
ABC26PH0067 · Given (i) Zn + 4NH3 → Zn(NH3)42+ + 2e, Eo = 1.03 V (ii) Zn → Zn+2 + 2e, E0 = 0.763 V the formation constant of the complex Zn(NH3)42+ is… · Electrochemistry – General
ABC26PH0112 · 1H NMR spectrum of an organic compound recorded on a 500 MHz spectrometer showed a quartet with line positions at 1759, 1753, 1747, 1741… · Molecular Spectroscopy – General
ABC26PH0113 · Vibrations of diatomic molecules are usually modelled by a harmonic potential. If the potential is given by x2, the correct statement is · Molecular Spectroscopy – General
ABC26PH0114 · The rotational constant and the fundamental vibrational frequency of HBr are, respectively, 10 cm-1 and 2000 cm-1. The corresponding values… · Molecular Spectroscopy – General
ABC26PH0115 · In a 200 MHz NMR spectrometer, a molecule shows two doublets separated by 2 ppm. The observed coupling constant is 10 Hz. The separation… · Molecular Spectroscopy – General
ABC26PH0217 · The volume of a gas adsorbed on a solid surface is 10.0 mL, 11.0 mL, 11.2 mL, 14.5 mL and 22.5 mL at 1.0, 2.0, 3.0, 4.0 and 5.0 atm… · Surface Chemistry – General
ABC26PH0220 · Saturation factor in neutron activation analysis is (A= induced radioactivity, psi = neutron flux, sigma = effective nuclear cross section… · Surface Chemistry – General
ABC26PH0242 · The equation of state for one mole of a gas is given by P(V - b) = RT, where b and R are constants. The value of ((∂ H)/(∂ P))T is · Thermodynamics – General
ABC26IN0810 · For the reaction, HX(aq)+H2O(l) gives H3O++X- the highest value of [X-], when X- is · Acids & Bases – General
ABC26IN0811 · Some molecules and their properties in liquid ammonia are given in columns A and B respectively. Match column A with column B The correct… · Acids & Bases – General
ABC26IN0837 · The primary analytical method (not using a reference) is: · Analytical Chemistry – General
ABC26IN0890 · In the catalytic hydration of CO2 by carbonic anhydrase, CO2 first interacts with · Zinc Enzymes
ABC26IN0891 · The number of inorganic Sulphur (or sulphide) atoms present in the metalloprotein active sites ofrubredoxin, 2-iron ferredoxin and 4-iron… · Metal Toxicity Medicine
ABC26IN0892 · From the following transformations, A. Epoxidation of alkene B. Dioldehydrase reaction C. Conversion of… · Bioinorganic Chemistry – General
ABC26IN0894 · Match the species in column X with their properties in column Y The correct answer is · Bioinorganic Chemistry – General
ABC26IN1085 · The HOMO (highest occupied molecular orbital) to LUMO (lowest unoccupied molecular orbital) electronic transition responsible for the… · Molecular Orbital Ligand Field
ABC26IN1086 · In the hydrolysis of trans-[Co(en)2Cl(A)]+ if the leaving group is chloride, the formation of cis product is the least, when A is · Coordination Chemistry – General
ABC26IN1087 · The nephelauxetic parameter beta is highest for · Coordination Chemistry – General
ABC26IN1088 · The 2Eg ← 4A2g transition in the electronic spectrum of [Cr (NH3)6]3+ occurs nearly at · Electron Transfer Redox
ABC26IN1089 · For [Ce (NO3)4 (OPPh3)2] from the following A. Its aqueous solution yellow-orange in B. Coordination number of Ce is ten C. It shows metal… · Charge Transfer Spectra
ABC26IN1090 · Consider the following statements for [FeO4]4- A. It is paramagnetic B. It has Td symmetry C. Adopts distorted square planar geometry D… · Coordination Chemistry – General
ABC26IN1091 · The spectroscopic ground state term symbols for the octahedral aqua complexes of Mn(II), Cr(III) and Cu(II), respectively, are · Term Symbols Spectra
ABC26IN1092 · For OH- catalysed SN1 conjugate base mechanism of [Co (NH3)5 Cl]2+, the species obtained in the first step of the reaction is/are · Reaction Mechanisms Substitution
ABC26IN1093 · In the following redox reaction with an equilibrium constant K=2.0 × 108 [Ru (NH3)6]2++ [Fe (H2 O6)]3+ → [Ru (NH3)6]3++ [Fe (H2 O)6]2+ the… · Reaction Mechanisms Substitution
ABC26IN1094 · The correct statement for a Fischer carbene complex is · Molecular Orbital Ligand Field
ABC26IN1095 · The highest molecular orbitals for an excited electronic configuration of the oxygen molecule are [1 pi g]1[3 sigma u]1. A possible… · Molecular Orbital Ligand Field
ABC26IN1181 · The expected number of 19 F NMR spectral lines, including satellites, for [XeF5]-is [Abundance of 129 Xe(I=1 / 2)=26%] · Electronic Spectra Tanabe Sugano
ABC26IN1182 · The reaction between PI3, PSCl3 and zinc powder gives P3I5 as one of the products. The solution state 31P NMR spectrum of P3I5 shows a… · Inorganic Spectroscopy – General
ABC26IN1183 · For complex A, deuteration of NH protons does not alter the EPR spectrum. The number of hyper fine lines expected in the EPR [I(63Cu) =… · Inorganic Spectroscopy – General
ABC26IN1184 · Number of lines in the 19 F NMR spectrum of F2 C(Br)-C(Br) Cl2, at -120° C assuming it a mixture of static conformations given below, are · Inorganic Spectroscopy – General
ABC26IN1290 · The metal iodide with metallic lustre and high electrical conductivity is · Main Group Elements – General
ABC26IN1291 · Consider the following statements for KC8 : (A) It is paramagnetic (B) It has eclipsed layer structure (C) Its electrical conductivity is… · Main Group Elements – General