29 questions from this paper that are in the bank. Each opens with its answer and explanation.
ABC26IN0037 · Oxidised form of enzyme catalase (structure A); prepared by the reaction of [Fe(P)]+ (P = porphyrin) with H2O2 has green color because… · Iron Sulfur Proteins
ABC26IN0095 · Which of the pairs will generally result in tetrahedral coordination complexes, when ligands are Cl^- or OH^-. (A) Be(II), Ba(II) (B)… · Molecular Orbital Ligand Field
ABC26IN0096 · Silica gel contains [Co(Cl4)]2- as an indicator. When activated, silica gel becomes dark blue while upon absorption of moisture, its colour… · Crystal Field Theory
ABC26IN0097 · The species with highest magnetic moment (spin only value) is [CSIR-JUNE 2013] · Coordination Chemistry – General
ABC26IN0098 · Three bands in the electronic spectrum of [Cr(NH3)6]3+ are due to the following transitions (A) 4A2g → 4T1g (B) 4A2g → 4T2g (C) 4A2g → 2Eg… · Electron Transfer Redox
ABC26IN0099 · The Delta t of the following complexes (A) [Co(Cl4)]2- (B) [Co(Br4)]2- (C) [Co(NCS4)]2- follows the order [CSIR-JUNE 2013] · Coordination Chemistry – General
ABC26IN0100 · An octahedral metal ion M+2 has magnetic moment of 4.0 B.M. The correct combination of metal ion and d-electron configuration is given by… · Electron Transfer Redox
ABC26IN0101 · MnCr2O4 is likely to have a normal spinel structure because [CSIR-DEC 2013] · Coordination Chemistry – General
ABC26IN0102 · Compounds K2Ba[Cu(NO2)6] (A) and Cs2Ba[Cu(NO2)6] (B) exhibit tetragonal elongation and tetragonal compression, respectively. The unpaired… · Electron Transfer Redox
ABC26IN0184 · The reaction of FeCl3 · 6H2O with SOCl2 yields. · Main Group Elements – General
ABC26IN0185 · Among the molten alkali metals, the example of an immiscible pair (in all proportions)is · Main Group Elements – General
ABC26IN0186 · Commonly used scintillator for measuring radiation is · Ring Cage Cluster
ABC26IN0188 · The solid state structure of aluminum fluoride is · Main Group Elements – General
ABC26IN0191 · Number of isomeric derivatives possible for the neutral closo-carborane, C2B10H12 is · Main Group Elements – General
ABC26IN0237 · The ligand in uranocene is: · Organometallic Compounds – General
ABC26IN0238 · The orders of reactivity of ligands, NMe3 PMe3, and CO with complexes MeTiCl, and (CO)5Mo (thf) are · Organometallic Compounds – General
ABC26IN0239 · The number of metal-metal bonds in Ir4(CO)12 is · Metal Carbonyls
ABC26IN0240 · In a cluster, H3CoRu3(CO)12 total number of electrons considered to be involved in its formation is · 18 Electron Rule
ABC26IN0241 · The correct statement regarding terminal/bridging CO groups in solid Co4(CO)12 and Ir4(CO)12 is · Organometallic Compounds – General
ABC26IN0242 · The electrophile Ph3C reacts with [(eta 5-C5H5)Fe(CO)2(CDMe2)]+ to give a product A. The product A is formed because · Metal Alkene Alkyne
ABC26PH0142 · The difference in energy levels of n = 2 and n = 1 of a particle -in - a one dimensional box is 6 units of energy. In the same units, what… · Quantum Chemistry – General
ABC26PH0143 · 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
ABC26PH0144 · Identify the Huckel determinant for cyclobutadiene · Huckel MO Theory
ABC26PH0145 · In the formation of H2 molecules from 2 H atoms placed at positions A and B, and separated by a distance rAB, a part of special… · Quantum Chemistry – General
ABC26PH0146 · The orbital with two radial and two angular nodes is · Hydrogen Atom
ABC26PH0147 · Consider a two-dimensional harmonic oscillator with potential energy V(x, y) = 1/2kx x2 + 1/2ky y2 If psi nx(x) and psi ny(y) are the… · Harmonic Oscillator
ABC26PH0148 · The most probable value of 'r' for an electron in 1s orbital of hydrogen atom is · Hydrogen Atom
ABC26PH0149 · The angular momentum operator Ly · Angular Momentum
ABC26PH0150 · The energy for a single electron excitation in cyclopropenium cation in Hückel theory is · Huckel MO Theory