126 questions from this paper that are in the bank. Each opens with its answer and explanation.
ABC26IN0054 · The highest occupied MO in N2 and O2^+ respectively are (take x-axis as internuclear axis) · Chemical Bonding – General
ABC26IN0158 · In the EPR spectrum of tetragonal Cu(II) complex, when g∥ > g⊥ > ge, the unpaired electron resides in the orbital. · Inorganic Spectroscopy – General
ABC26IN0169 · The electronic configuration for gadalonium (Gd) is [Xe]4f7 5d16s2, where as that of Gd2+ is: · Lanthanides & Actinides – General
ABC26IN0170 · Uranium fluorides co-precipitate with · Lanthanides & Actinides – General
ABC26IN0225 · The oxidative addition and reductive elimination steps are favoured by · Oxidative Addition Reductive Elimination
ABC26IN0227 · Oxidation occurs very easily in case of · Organometallic Compounds – General
ABC26IN0228 · Complex in which organic ligand is having only sigma -bond with metal is: · Metal Carbonyls
ABC26OR0002 · The two compounds given below are and · Stereochemistry R S E Z
ABC26OR0003 · In the most stable conformation of trans-1-t-butyl-3-methylcyclohexane, the substituents at C–1 and C–3, respectively, are · Conformational Analysis
ABC26OR0004 · Among the carbocations given below (A) (B) (C) · Aromaticity
ABC26OR0005 · The relative rates of solvolysis of iodides A-C are · Carbocation Stability
ABC26OR0006 · The correct order of acidity of the following compound A-C is: · Acidity Basicity
ABC26OR0008 · The IUPAC name of the following compound is · Nomenclature Polycyclics
ABC26OR0010 · With respect to electrophilic aromatic substitution, reactivity order of pyrrole, pyridine and indole is · Aromaticity
ABC26OR0011 · An optically active compound enriched with R-enantiomer (60% ee) exhibited [ alpha]D+90°. If the [ alpha]D value of the sample is -135°… · Stereochemistry R S E Z
ABC26OR0074 · The major product formed on nitration (HNO3/H2SO4) of uridine followed by reduction with tin and HCl is: · Natural Products – General
ABC26OR0121 · In the mass spectrum of the compound given below, during the alpha -cleavage, the order of preferential loss of groups is: · IR
ABC26OR0140 · The concerted photochemical reaction between two olefins leading to a cyclobutane ring is: · Cycloaddition Diels Alder
ABC26OR0161 · The concerted photochemical reaction between two olefins leading to a cyclobutane ring is: · Photocycloaddition
ABC26OR0170 · The major product formed in the reaction given below is: I2/KI · Reagents, Reaction Mechanisms & Named Reactions – General
ABC26OR0173 · The intermediate A and the major product B in the following conversion are A B · Reagents, Reaction Mechanisms & Named Reactions – General
ABC26OR0174 · The major product formed in the following reaction is: + · Named Reactions
ABC26OR0175 · The major product formed in the following reaction is: PhSNa · Named Reactions
ABC26OR0178 · The major product formed in the following reaction is: 2. MeI · Named Reactions
ABC26OR0180 · The major product formed in the following transformation is: · Reagents, Reaction Mechanisms & Named Reactions – General
ABC26PH0001 · The term symbol of a molecule with electronic configuration (1 sigma g)2(1 sigma u)2(2 sigma g)2(2 sigma u)2(2 pi u)1(2 pi u)1 is: · Term Symbols Atoms
ABC26PH0051 · For an aqueous solution at 25°C, the Debye-Huckel limiting law is given by · Debye Huckel
ABC26PH0094 · For an assembly of molecules (molar mass =M) at temperature T, the standard deviation of Maxweller's speed is approximately · Gaseous State – General
ABC26PH0095 · The virial expansion for a real gas can be written in either of the following forms: PV/RT = 1 + BP P + CP P2 + … = 1 + BV V + CV V2 + … If… · Real Gases Virial
ABC26PH0103 · At room temperature, which molecule has the maximum rotational entropy? · Molecular Spectroscopy – General
ABC26PH0104 · The microwave spectrum of a molecule yields three rotational constants. The molecule is · Rotational
ABC26PH0129 · The hermitian conjugate of operator d / d x, called (d / d x), is actually equal to · Postulates Operators
ABC26PH0130 · The energy levels for cyclobutadiene are alpha + 2 beta, alpha, alpha and alpha - 2 beta. The delocalization energy in this molecule is: · Quantum Chemistry – General
ABC26PH0131 · For a certain particle encountering a barrier, the tunneling probability is approximately e-10. If the mass is halved and width of the… · Quantum Chemistry – General
ABC26PH0132 · An operator A is defined as A=-d/d x+x. Which one of the following statements is true? · Postulates Operators
ABC26IN0799 · The correct order of acidity among the following species is · Acids & Bases – General
ABC26IN0824 · Thermometric titration gives best results when A. | Delta H| is high B. Delta G<0 C. Heat of mixing of titrant with titrant is high D… · Analytical Chemistry – General
ABC26IN0849 · The FALSE statement for a polarographic measurement procedure is: · Analytical Chemistry – General
ABC26IN0851 · The ligand system present in vitamin B12 is: · Bioinorganic Chemistry – General
ABC26IN0921 · Among SF4-, BF4-, XeF4, and ICl4-, the number of species having two lone pair of electrons central atom according to VSEPR theory is: · MO Theory Diatomics
ABC26IN0922 · In the molecules H2 O, NH4 and CH4 · Chemical Bonding – General
ABC26IN0923 · According to VSEPR theory, the molecule/ion having ideal tetrahedral shape is · MO Theory Diatomics
ABC26IN0924 · The highest occupied MO in N2 and O2+respectively are (take x -axis as internuclear axis) · Chemical Bonding – General
ABC26IN0925 · The molecule with highest number of lone-pairs and has a linear shape based on VSEPR theory is: · MO Theory Diatomics
ABC26IN0926 · The number of anti-bonding electrons in NO and CO according to MO theory are respectively. · Hydrogen Bonding Weak Interactions
ABC26IN0927 · Among the following pairs, those in which both species have similar structures are: (A) N3-, XeF2 (B) [ICl4]-, [PtCl4]2- (C) [ClF2]+… · Chemical Bonding – General
ABC26IN0928 · Match list I (compounds) with list II (structures), and select the correct answer using the codes given below. · Chemical Bonding – General
ABC26IN0984 · Ni (CN4)2- and Ni (Cl4)2- complex ions are : · Coordination Chemistry – General
ABC26IN0985 · According To Crystal Field Theory, Ni2+ can two have unpaired electrons in · Crystal Field Theory
ABC26IN0986 · The term symbol of a molecule with electronic configuration: (1 sigma g)2(1 sigma u)2(2 sigma g)2(2 sigma u)2(1 pi u)1(1 pi u)1 is: · Electron Transfer Redox