86 questions from this paper that are in the bank. Each opens with its answer and explanation.
ABC26IN1409 · The role of copper salt as co-catalyst in Wacker process is · Organometallic Compounds – General
ABC26IN1410 · For typical Fischer and Schrock carbenes, consider the following statements A. Oxidation state of metal is low in Fischer carbene and high… · Carbene Carbyne
ABC26IN1411 · The refluxing of RhCl3.3 H2 O with an excess of PPh3, in ethanol gives a complex A. Complex A and the valence electron count on rhodium… · 18 Electron Rule
ABC26IN1412 · The beta -hydrogen elimination will be facile in · Oxidative Addition Reductive Elimination
ABC26IN1414 · According to Wade's theory the anion [B12 H12]2- adopts · Cluster Compounds Wade Rules
ABC26IN1415 · The reaction of SbCl3, with 3 equivalents of EtMgBr yields compound X. Two equivalents of SbI3 react with one equivalent of X to give Y. In… · Cluster Compounds Wade Rules
ABC26IN1416 · The following statements are given regarding the agostic interaction C-H----Ir observed in [Ir (Ph3 P)3 Cl]. (A) Upfield shift of C-H… · Organometallic Compounds – General
ABC26IN1417 · Match column A (coupling reactions) with column B (reagents) The correct match is: · Organometallic Compounds – General
ABC26IN1418 · Amongst the following (A) [Mn (eta 5-Cp)(CO)3] (B) [Os (eta 5-Cp)2] (C) [Ru (eta 5-Cp)2] and (D) [Fe (eta 5-Cp)2] the compounds with most… · Cluster Compounds Wade Rules
ABC26IN1419 · Total number of vertices in metal clusters [Ru6(C)(CO)17] [Os5(C)(CO)15] and [Ru5(C)(CO)16] are 6,5 and 5, respectively. The predicted… · Cluster Compounds Wade Rules
ABC26OR0972 · The 1H NMR spectrum of a dilute solution of a mixture of acetone and dichloromethane in CDCl3 exhibits two singlet of 1:1 intensity. Molar… · NMR 1H
ABC26OR0973 · Intense band generally observed for a carbonyl group in the IR spectrum is due to · IR
ABC26OR0974 · Number of signals in the 13C{1H} NMR spectrum of (R)-4-methylpentan-2-ol are · NMR 13C
ABC26OR0975 · An organic compounds shows following spectral data: IR (cm-1): 1680 1 H NMR (CDCl3): delta 7.66(m, 1 H), 7.60(m, 1 H), 7.10(m, 1 H)… · Combined Structure Elucidation
ABC26OR1037 · The major product formed in the following reaction is heat · Pericyclic Reactions – General
ABC26PH0917 · The temperature-dependence of a reaction is given by k = AT2exp (-E0/RT). The activation energy Ea of the reaction is given by: · Arrhenius Activation
ABC26PH0918 · For a reaction, 2A + B → 3Z, if the rate of consumption of A is 2 × 10-4 mol dm-3s-1 the rate of formation of Z (in mol dm-3s-1) will be · Chemical Kinetics – General
ABC26PH0919 · For a given ionic strength, (I) rate of reaction is given by /(k0) = -4 × 0.51 I1/2. Which of the following reactions follows the above… · Chemical Kinetics – General
ABC26PH0920 · The intensity of a light beam decreases by 50% when it passes through a sample of 1.0 cm path length. The percentage of transmission of the… · Chemical Kinetics – General
ABC26PH0921 · Considering the following parameters with reference to the fluorescence of a solution: 1. Molar absorptivity of fluorescent molecule. 2… · Chemical Kinetics – General
ABC26PH0922 · According to transition state theory, the temperature-dependence of pre-exponential factor (A) for a reaction between a linear and a… · Arrhenius Activation
ABC26PH0923 · In a photochemical reaction, radicals formed according to the equation C4H10 + h nu ⇌ 2C2H5; C2H5 + C2H5 k2 C2H6 + C2H4 If I is the… · Chemical Kinetics – General
ABC26PH0962 · In a conductometric experiment for estimation of acid dissociation constant of acetic acid, the following values were obtained in four sets… · Data Analysis – General
ABC26PH0995 · The correct Delta G for the cell reaction involving steps Zn(s) → Zn2+(aq) + 2e Cu2+(aq) + 2e → Cu(s) · Nernst Cells
ABC26PH0996 · The temperature-dependence of an electrochemical cell potential is · Electrochemistry – General
ABC26PH0997 · Conductometric titration of a strong acid with a strong alkali (MOH) shows linear fall of conductance up to neutralization point because of · Conductance
ABC26PH1115 · The symmetric rotor among the following is · Molecular Spectroscopy – General
ABC26PH1116 · The nuclear g-factors of 1H and 14N are 5.6 and 0.40 respectively. If the magnetic field in an NMR spectrometer is set such that the proton… · Molecular Spectroscopy – General
ABC26PH1117 · The spectroscopic technique, by which the ground state dissociation energies of diatomic molecules can be estimated, is · Rotational
ABC26PH1181 · The intrinsic viscosity depends on the molar mass as [ eta] = KMa. The empirical constants K and a are dependent on · Viscometry Characterisation
ABC26PH1182 · The stability of a lyophobic colloid is the consequence of · Polymer Chemistry – General
ABC26PH1345 · Silver crystallizes in face-cantered cubic structure. The 2nd order diffraction angle of a beam of X-ray (lambda =1 Å) of (111) plane of… · X Ray Diffraction Bragg
ABC26PH1391 · The indistinguishability correction in the Boltzmann formulation is incorporated in the following way: (N = total number of particles; f=… · Partition Functions
ABC26PH1427 · For a reaction on a surface At low pressure of H, the rate is proportional to · Surface Chemistry – General
ABC26PH1477 · Heat capacity of a species is independent of temperature if it is · Thermodynamics – General
ABC26PH1479 · A thermodynamic equation that relates the chemical potential to the composition of a mixture is known as · Partial Molar Quantities