97 questions from this paper that are in the bank. Each opens with its answer and explanation.
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
ABC26OR0946 · In the mass spectrum of dodecahedron (C20 H20), approximate ratio of the peaks at m / z=260 and 261 is · Mass Spec
ABC26OR0949 · Appropriate 1H NMR chemical shifts (delta) for the protons A-D for the following compound are B A · NMR 1H
ABC26OR1017 · In the following concerted reaction, the product is formed by a Delta · Electrocyclic
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
ABC26PH0877 · The overall rate of the following complex reaction, 2 A k1k2⇌ A2 (fast equilibrium) A+B k2⇌ C (fast equilibrium) A2+C k3⇌ P+2 A (slow) by… · 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 {XiYi} to the equation Y = A.X, the regression coefficient (A) is estimated by · Regression Fitting
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 standard electrode potentials (E°) of Fe3+/Fe2+ and Fe2+/Fe electrodes are + 0.77V and -0.44 V respectively at 300 K. The E° of Fe3+/Fe… · 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 C2h 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
ABC26PH1069 · The character table for the D4 point group is provided below: For this point group, the correct statement among the following is: · Character Tables
ABC26PH1070 · The character table of C3v point group is provided below, along with an additional reducible representation, Gamma Gamma is given by · Reducible Representations
ABC26PH1071 · The molecule that possesses symmetry S4 element is · Group Theory – General
ABC26PH1072 · For H2O molecule, the electronic transition from the ground state to an excited state of B1 symmetry is · Group Theory – General
ABC26PH1073 · The pair of symmetry point groups that are associated with only polar molecules is · Symmetry Elements Point Groups
ABC26PH1171 · The osmotic pressure (pi) of a polymer sample at different concentrations (c) was measured at T(K). A plot of (pi /c) versus c gave a… · Molecular Weight Averages
ABC26PH1210 · Identify which of the following operators is not hermitian? · Postulates Operators
ABC26PH1211 · A particle is constrained in a one dimensional box of length 2a with potential V(x) = ∞; x < -a, x > a and V(x) = 0; -a ≤ x ≤ a. Energy… · Particle In A Box
ABC26PH1212 · For the eigen states of the hydrogen atom, which of the following relations between the expectation value of kinetic energy (T) and… · Postulates Operators
ABC26PH1214 · For non-degenerate perturbation theory for ground state, with E0(0) as zeroth order energy, E0(1) as the first-order perturbation… · Perturbation Theory
ABC26PH1215 · An excited triplet state wave function of hydrogen molecule with the electronic configuration sigma g1 sigma u1 has the following space part · Quantum Chemistry – General
ABC26PH1321 · The value of d111 in a cubic crystal is 325.6 pm. The value of d333 is · Solid State Chemistry – General
ABC26PH1322 · Consider a n-type semiconductor whose EV = 0, EC = 2.0 eV and ED = 1.98 eV. The correct statement among the following is · Band Theory
ABC26PH1371 · PA and PB denote the populations of two energy states EA and EB and EA > EB. The correct statement when the temperature T1 > T2 is · Statistical Thermodynamics – General
ABC26PH1372 · A system consisting of 4 identical and distinguishable particles, each possessing three available states of 1, 2 and 3 units, has 10 units… · Statistical Thermodynamics – General
ABC26PH1448 · For a system of constant composition, the pressure (P) is given by. · Thermodynamics – General
ABC26PH1449 · For the reaction C2H4(g) + 3O2(g) → 2CO2(g) + 2H2O(l), the value of Delta H - Delta U (in kJ) at 300 K and 1 bar is · Thermodynamics – General
ABC26PH1450 · 1 mol of CO2, 1 mol of N2 and 2 mol of O2 were mixed at 300 K. The entropy of mixing is · Laws State Functions
ABC26PH1451 · For the liquid ⇌ vapour equilibrium of a substance dP / dT at 1 bar and 400 K is 8 × 10-3 bar K-1. If the molar volume in the vapour form… · Laws State Functions