87 questions from this paper that are in the bank. Each opens with its answer and explanation.
ABC26IN1374 · The oxidation state of molybdenum in [ (eta 7 -tropylium) Mo(CO)3]+is: · Organometallic Compounds – General
ABC26IN1375 · The reaction, [(CO)5 Mn(Me)]+CO → [(CO)5 Mn{C(O) Me}] is an example for · Oxidative Addition Reductive Elimination
ABC26IN1376 · The orders of reactivity of ligands, NMe3 PMe3, and CO with complexes MeTiCl, and (CO)5 Mo (thf) are · Organometallic Compounds – General
ABC26IN1377 · The number of metal-metal bonds in [W2(OPh)6] is: · Metal Carbonyls
ABC26IN1378 · The number of metal-metal bonds in Ir4(CO)12 is · Metal Carbonyls
ABC26OR0957 · In the IR spectrum, the absorption band due to carbonyl group in phenyl acetate appears at · IR
ABC26OR0958 · In the UV-visible is spectrum, a diterpenoid exhibited lambda max =275 nm. The compound, among the choices given below is · Organic Spectroscopy – General
ABC26OR0959 · In the broad band decoupled 13C NMR spectrum, the number of signals appearing for the two pyrene diols A and B (A) (B) · Organic Spectroscopy – General
ABC26OR1025 · The major product formed in the following reaction is + 1. Delta 2. TiCl3, HCl · Pericyclic Reactions – General
ABC26OR1072 · The following photochemical conversion proceeds through · Photocycloaddition
ABC26PH0896 · In atom recombination reactions · Chemical Kinetics – General
ABC26PH0897 · A radioisotope 41Ar initially decays at the rate of 34,500 disintegrations/minute, but decay rate falls to 21,500 disintegrations/minute… · Chemical Kinetics – General
ABC26PH0899 · The concentrations of a species A undergoing the reaction A → P is 1.0, 0.5, 0.33, 0.25 mol dm-3 at t = 0, 1, 2 and 3 seconds… · Chemical Kinetics – General
ABC26PH0900 · In the Lindemann mechanism of unimolecular reactions, the observed order at low concentration is: · Chemical Kinetics – General
ABC26PH0902 · The rate equation for the reaction 2 AB+B2 → 2 AB2 is given byrate =k[AB] [B2] A possible mechanism consistent with this rate law is · Rate Laws Order
ABC26PH0903 · A 0.1 M solution of compound A shows 50% transmittance when a cell of 1 cm width is used at lambda nm. Another 0.1 M solution of compound B… · Chemical Kinetics – General
ABC26PH0904 · A chemical reaction involving nonlinear molecule + nonlinear molecule ⇌ nonlinear activated complex. The number of vibrational degrees of… · Chemical Kinetics – General
ABC26PH0958 · The correlation coefficient of two parameters is found to be –0.99. It may be concluded that the two parameters are · Regression Fitting
ABC26PH0959 · For two variables x and y, the following data set is given: The correct statement for the covariance A and correlation coefficient B of x… · Regression Fitting
ABC26PH0982 · If the concentration (c) is increased to 4 times its original value (c), the change in molar conductivity for strong electrolytes is (where… · Conductance
ABC26PH1107 · In NMR spectroscopy, the product of the nuclear 'g' factor (gN), the nuclear magneton (beta N) and the magnetic field strength (B0) gives… · Molecular Spectroscopy – General
ABC26PH1108 · An AX system gave 4 lines at 4.72, 4.6, 1.12 and 1.0 ppm away from the TMS using an nmr spectrometer operating at 100 MHz. What are the… · Molecular Spectroscopy – General
ABC26PH1234 · The wave function psi of a certain system is the linear combination psi = √(1/4) psi 1 + √(3/4) psi 2 where psi 1 and psi 2 are energy… · Quantum Chemistry – General
ABC26PH1235 · For the particle-in-a-box problem in (0, L) an approximate wave function is given as x(L/2 - x)(L - x). The average energy E for such a… · Quantum Chemistry – General
ABC26PH1236 · The hydrogenic orbital with the form of the radial function r2(alpha 1 - r)(alpha 2 - r)exp [- beta r] where a1, a2 and b are constants… · Hydrogen Atom
ABC26PH1237 · The operator [x, [x, p2]] is identical with · Postulates Operators
ABC26PH1239 · Identify the Huckel determinant for cyclobutadiene · Huckel MO Theory
ABC26PH1331 · The coordinates for the atoms in a body centred cubic unit cell are · Crystal Systems Lattices
ABC26PH1332 · The inter planar distance (Å) for a (100) plane in a cubic structure with the lattice parameter of 4 Å is: · Crystal Systems Lattices
ABC26PH1333 · A plane of spacing 'd' shows first order Bragg diffraction at angle theta. A plane of spacing 2d · X Ray Diffraction Bragg
ABC26PH1378 · A system has 100 degenerate energy levels and 100 bosons are kept in it. Find the entropy of the system at equilibrium · Statistical Thermodynamics – General
ABC26PH1379 · Calculate the total number of microstates for 6 identical particles with their occupation numbers {1, 2, and 3} in three states is · Statistical Thermodynamics – General
ABC26PH1380 · The allowed transition among the following is · Statistical Equilibrium
ABC26PH1420 · The aggregation of surfactant molecules is known as · Colloids Micelles
ABC26PH1421 · "Colloids are thermodynamically unstable with reference to bulk but kinetically stable". Identify the correct pair · Surface Tension
ABC26PH1460 · The lowest pressure at which the liquid phase of a pure substance can exist is known as · Thermodynamics – General
ABC26PH1462 · Which of the following statements is true for a cyclic process? · Thermodynamics – General