24 questions from this paper that are in the bank. Each opens with its answer and explanation.
ABC26IN0035 · The oxidation state of iron in met-hemoglobin is · Oxygen Carriers Hemoglobin
ABC26IN0036 · The changes (from A-D given below) which occur when O2 binds to hemerythrin are (A) One iron atoms is oxidized (B) Both the iron atoms are… · Iron Sulfur Proteins
ABC26IN0090 · The light pink color of [Co (H2 O )6 ]2+ and the deep blue color of [CoCl4 ]2- are due to · Coordination Chemistry – General
ABC26IN0091 · The number of possible isomers of [Ru (PPh3 )2(acac)2 ]( acac = acetylacetonate ) is: · Coordination Chemistry – General
ABC26IN0092 · The total number of Cu-O bonds present in the crystalline copper(II) acetate monohydrate is: · Crystal Field Theory
ABC26IN0093 · In the solid state, the CuCl5 ion has two types of bonds. These are · Coordination Chemistry – General
ABC26IN0094 · The correct spinel structure of Co3 O4 is: · Coordination Chemistry – General
ABC26IN0171 · The least basic among the following is: · Lanthanides & Actinides – General
ABC26IN0181 · Structure of a carborane with formula, C2B4H8, is formally derived from · Main Group Elements – General
ABC26IN0182 · Boric acid is a weak acid in aqueous solution. But its acidity increases significantly in the presence of ethylene glycol, because · Main Group Elements – General
ABC26IN0231 · The carbonyl resonance in 13C NMR spectrum of [(5-C5H5)]Rh(CO)]3 (103Rh, nuclear spin, I=1/2, 100 %) shows a triplet at -65 C owing to the… · Organometallic Compounds – General
ABC26IN0232 · The cluster having arachno type structure is: · 18 Electron Rule
ABC26IN0233 · The complex that DOES NOT obey 18- electron rule is: · 18 Electron Rule
ABC26PH0134 · The average value of the radius r in the 1s state of the hydrogen atom is (a0 is Bohr radius) · Hydrogen Atom
ABC26PH0135 · The probability of finding the particle in a one dimensional box of length 'L' in the region between L/4 and 3L/4 for quantum number n=1 is: · Particle In A Box
ABC26PH0136 · A particle in three dimensional cubic box of length L has energy of 14h28mL2. The degeneracy of the state is · Particle In A Box
ABC26PH0137 · Using Hückel molecular orbital approximation, the two roots of secular equation of ethene are · Huckel MO Theory
ABC26PH0138 · If A and B are non-commuting hermitian operators, all eigenvalues of the operator given by the commutator [A, B] are · Postulates Operators
ABC26PH0139 · The value of commutator [x, px2 ] is given by · Postulates Operators
ABC26PH0140 · Combining two real wave functions 1 and 2 the following functions are constructed: A=1 +2, B=1+i 2, C=1-i 2, D=i (1+2 ) The correct… · Quantum Chemistry – General
ABC26PH0141 · The trial wave function of a system is expanded as =c1 1+c2 2. The matrix elements of the Hamiltonian are 1 | H |1 =0 ; 1 | H |2 =2.0= 2 |… · Variation Method
ABC26PH0184 · The structure obtained when all the tetrahedral holes are occupied in a fee structure is of the type · Solid State Chemistry – General
ABC26PH0185 · The lattice parameter of an element stabilized in a fcc structure is 4.04 . The atomic radius of the element is: · Crystal Systems Lattices
ABC26PH0186 · The wavelength and the spectral region for a single electron transfer across the band gap in a semi conductor (Ex-1.98 10-19 ) are [h=6.626… · Band Theory