197 questions from this paper that are in the bank. Each opens with its answer and explanation.
ABC26OR0438 · In the given transformation, the intermediate [mathrmA] and the major product B are · Reagents, Reaction Mechanisms & Named Reactions – General
ABC26OR0439 · The major products A and B in the following transformation are: · Reagents, Reaction Mechanisms & Named Reactions – General
ABC26OR0440 · The major product in the following reaction is = · Named Reactions
ABC26OR0441 · The major product in the following reaction sequence is · Reagents, Reaction Mechanisms & Named Reactions – General
ABC26OR0442 · The structure of A in the following reaction is 1. i) hv · Named Reactions
ABC26OR0443 · The major product in the following reaction is: · Named Reactions
ABC26OR0444 · The correct sequence of reactions involved in the following transformation is: · Named Reactions
ABC26OR0445 · The major product formed in the following reaction is: · Named Reactions
ABC26OR0446 · The major product formed in the following reaction is: · Named Reactions
ABC26OR0447 · The major product formed in the following reaction sequence is · Reagents, Reaction Mechanisms & Named Reactions – General
ABC26OR0448 · The major product formed in the following reaction is arrayl Ns = 2-nitrobenzenesulfonyl DEAD = diethyl azodicarboxylate array · Named Reactions
ABC26OR0449 · The major product formed in the following reaction is · Named Reactions
ABC26PH0035 · The equilibrium constants for the reactions CH4(g)+2H2O(g) CO2(g)+4H2(g) and CO(g)+H2O(g) CO2(g)+H2(g) are K1 and K2, respectively. The… · Chemical Kinetics – General
ABC26PH0047 · The oxidation of NO to NO2 occurs via the mechanism given below. arrayl 2\,NO k-1k1 N2O2 \\ N2O2+O2 k2 2\,NO2 array (d[NO2])/dt in the… · Chemical Kinetics – General
ABC26PH0048 · Substance 'A' is exposed to 600\,nm, 100\,W light source for 6626\,s, with 50\% of the incident light being absorbed. 'A' decomposes… · Chemical Kinetics – General
ABC26PH0075 · For the electrochemical cell Ag|AgCl| MCl(0.01 M)|MCl(0.02 M)| AgCl Ag, the junction potential is the highest when M+is · Electrochemistry – General
ABC26PH0076 · The electrolyte solution that has the smallest Debye-length at 298 K is · Debye Huckel
ABC26PH0089 · A cube does not have the symmetry element · Symmetry Elements Point Groups
ABC26PH0090 · The reducible representation , in the table is equal to the following superposition of the irreducible representation of C2v point group. · Character Tables
ABC26PH0091 · The observed IR spectrum of BCl3 exhibits three bands at 995, 480 and 244\,cm-1, while the Raman bands are observed at 995, 471 and… · Group Theory – General
ABC26PH0092 · Given the matrices for C3 and below C3=pmatrix -1/2 & -√(3)2 & 0 \\ √(3)2 & -1/2 & 0 \\ 0 & 0 & 1 pmatrix =pmatrix 1 & 0 & 0 \\ 0 & 1 & 0… · Group Theory – General
ABC26PH0101 · The molar residual entropy (in J / K ) for solid OCS is close to · Kinetic Theory of Gasses – General
ABC26PH0102 · A monoatomic perfect gas undergoes expansion from (p1, V1) to (p2, V2) under isothermal or adiabatic conditions. The pressure of the gas… · Kinetic Theory of Gasses – General
ABC26PH0109 · The atomic masses of fluorine and hydrogen are 19.0 and 1.0 amu, respectively (1\,amu=1.6710-27\,kg). The bond length of HF is 2.0\,. The… · Molecular Spectroscopy – General
ABC26PH0110 · The C=O bond length is 120 pm in CO2. The moment of inertia of CO2 would be close to (masses of C and O are 1.9 10-27 kg and 2.5 10-27 kg… · Molecular Spectroscopy – General
ABC26PH0126 · Using standard equation for intrinsic viscosity []=KMva for a solution of polymer and any information from the graph identify viscosity… · Viscometry Characterisation
ABC26PH0210 · The molar residual entropy (in J\,K-1) of solid OCS would be closest to · Statistical Thermodynamics – General
ABC26PH0218 · A liquid of density 1.1\,g\,cm-3 climbs to a height of 5.0 cm when a capillary with internal radius of 0.2 mm is dipped into it. The… · Surface Tension
ABC26PH0219 · The order of a surface catalyzed unimolecular reaction, at very low and very high pressures of the reactant, would be, respectively · Catalysis Surface
ABC26PH0252 · Consider the entropy changes in a system undergoing transformation, as depicted in the diagram, below arrayc 25 Delta S1 50 Delta S2 75 \\… · Laws State Functions
ABC26PH0253 · Molar composition of a mixture of P and Q at equilibrium is 3:1 (P:Q). A small disturbance in composition results in change of chemical… · Partial Molar Quantities
ABC26PH0254 · (CP - CV) for a non-ideal gas differs from (CP - CV) for a perfect gas by the expression · Thermodynamics – General
ABC26PH0255 · A monatomic perfect gas undergoes expansion from (p1, V1 ) to (p2, V2 ) under isothermal or adiabatic conditions. The pressure of the gas… · Thermodynamics – General
ABC26PH0256 · The excess molar entropy of mixing of liquid A with liquid B is -R 2. The experimentally observed change in entropy upon mixing 1.0 mol of… · Laws State Functions
ABC26IN0820 · Choose the equilibria from the following that are NOT favoured to go to right arrayl (A) As2S5+5HgO gives As2O5+5HgS \\ (B) La2(CO3)3+Bi2S3… · Acids & Bases – General
ABC26IN0821 · Among SO2(OH) F, CH3 CO2 H, LiF and H2 O, the compound(s) which behave(s) as a base in liquid HF is/are · Acids & Bases – General
ABC26IN0825 · The pair of light source and atomizer resulting highest sensitivity to atomic absorption spectrometric measurement is: · Analytical Chemistry – General
ABC26IN0826 · Inspectrofluorimetric determination in solution A. absorbance of analyte solution is kept near to 0.05 B. oxygen is eradicated from… · Analytical Chemistry – General
ABC26IN0827 · Match the items in column I with those of column II Correct match is · Titrations Gravimetry
ABC26IN0911 · Choose the correct statements for oxymyoglobin and cytochrome P450 (resting state) from the following: A. Both contain dianion of… · Metal Toxicity Medicine
ABC26IN0912 · The correct match for the drug molecules in the Column A with their medicinal use in Column B is P (i) Anaesthetic Q Warfarin (ii)… · Bioinorganic Chemistry – General
ABC26IN0913 · Complex(es) which has/have unpaired electron(s) that is equal to that of iron center in oxymyoglobin is/are A. [Fe(ox)3]3- B. [Fe(CN)6]3-… · Iron Sulfur Proteins
ABC26IN0914 · Match Column I, II and III The correct match is · Metal Toxicity Medicine
ABC26IN0915 · During the binding of O2 to myoglobin (consider 'heme' in xy-plane), the molecular orbital of O2 and atomic orbital of Fe involved in the… · Bioinorganic Chemistry – General
ABC26IN0916 · In the catalytic cycle of Cytochrome P450, the generation of [(porphyrin)+FeIV(O)] from [(porphyrin)FeIII(OOH)] involves · Bioinorganic Chemistry – General
ABC26IN0975 · The ion having the highest bond order is · Hydrogen Bonding Weak Interactions
ABC26IN0976 · The magnitude of bond angles in gaseous NF3, SbF3 and SbCl3 follow the order · Chemical Bonding – General
ABC26IN0977 · The species for which the shapes (geometry) can be predicted by VSEPR theory is/are (A) [PtCl4 ]2- (B) [TeCl6 ]2- (C) PF3 and SF6 · VSEPR Geometry
ABC26IN0978 · Choose the correct order of energy of 2 and 1 0 molecular orbitals for B2, C2 and O2 : · Chemical Bonding – General
ABC26IN0979 · As per the VSEPR theory, shapes of and are, respectively · MO Theory Diatomics