52 questions from this paper that are in the bank. Each opens with its answer and explanation.
ABC26IN0012 · Consider compounds PF5, SbF5, PH3 and SbH3. The strongest acid and the strongest base among these are, respectively · Acid and Bases – General
ABC26OR0059 · Oxidation of A with mathrmHNO3/H2O provides the product (s), which is (are) A · Stereochemistry R S E Z
ABC26OR0060 · Among the following, the optically active compound is · Stereochemistry R S E Z
ABC26OR0116 · The keto-hexose among the following is · Natural Products – General
ABC26OR0136 · In the 31P{1H} NMR spectrum of a diamagnetic complex mer–[M(PR3)3Cl3] expected number of resonance is · Organic Spectroscopy – General
ABC26OR0382 · Correct sequence of reagents to be used for the following conversion is- · Reduction Reagents
ABC26OR0384 · The major product formed in the following reaction is: i. I2, pyridine iii. NaBH4, CeCl3· 7H2O · Named Reactions
ABC26OR0387 · The correct sequence of reagents to be used for the following conversion is- · Reagents, Reaction Mechanisms & Named Reactions – General
ABC26OR0388 · Both 1-chloro-1-phenylpropan-2-one and 1-chloro-3-phenylpropan-2-one give same product A when heated in presence of NaOMe. The product A is · Reagents, Reaction Mechanisms & Named Reactions – General
ABC26PH0070 · The correct statement among the following is · Electrochemistry – General
ABC26PH0071 · The standard free energy of the reaction AgBr(s) → Ag^+(aq) + Br^-(aq) Is closest to. [Eo(AgBr/Ag, Br^-) = 0.07 V; Eo(Ag/Ag^+) = 0.80 V; F… · Electrochemistry – General
ABC26PH0072 · Conductivities of water and a saturated solution of a sparingly soluble salt AB2 are 7 and 21 mu S m-1, respectively. Given, lambda o_A2+ =… · Electrochemistry – General
ABC26PH0073 · The equilibrium constant of the following reaction: Sn(s) + Sn4+(aq) ⇌ 2Sn2+(aq) At 300 K is closest to, (Given, Eo_Sn4+/Sn2+ = 0.15 V and… · Electrochemistry – General
ABC26PH0099 · Root mean square speed of the molecules of a perfect gas is proportional to · Maxwell Distribution
ABC26PH0100 · Entropy of a perfect gas is · Gaseous State – General
ABC26PH0208 · The translational partition function for Ar confined to a volume of 1L at 300K, having thermal wavelength of 1.60 × 1011 m, is closest to : · Partition Functions
ABC26PH0248 · Entropy of a perfect gas is · Laws State Functions
ABC26IN0816 · Consider compounds PF5, SbF5, PH3 and SbH3. The strongest acid and the strongest base among these are, respectively · Acids & Bases – General
ABC26IN0905 · The chelate rings made by macrocyclic ligand in vitamin B12 are · Bioinorganic Chemistry – General
ABC26IN0906 · Match the items given below in the three columns: Correct matches: · Metal Toxicity Medicine
ABC26IN0969 · Among SiCl4, P(O) Cl3, NF3, trans- [SnCl4(py)2] (py-pyridine), those with zero dipole moment are · Dipole Moment Polarity
ABC26IN0970 · The characters of LUMO and CN-and O2 respectively, are · Chemical Bonding – General
ABC26IN0971 · Arrange the following molecules in order of increasing fundamental vibrational frequencies · Chemical Bonding – General
ABC26IN1116 · Consider the species NO, I2, I2-, Cu2+ and VO2+. The number of paramagnetic species among them and the EPR inactive species, respectively… · Coordination Chemistry – General
ABC26IN1117 · The intermediate [Fe(SCN) (H2 O)5]2+ is detected in the reaction of [Co(NCS) (NH3)5]2+ with [Fe (H2 O)6]2+ in aqueous medium to produce [Co… · Electron Transfer Redox
ABC26IN1118 · For magnesium complex of EDTA2-, the number of N-donor and O-donor centers, are respectively. · Coordination Chemistry – General
ABC26IN1119 · The correct set of electronic configurations for metal ions in octahedral coordination geometry for strong Jahn-Teller distortion is · Jahn Teller
ABC26IN1120 · The correct order of intensity of the d-d transitions in the complexes of a 3d-transition metal ion · Coordination Chemistry – General
ABC26IN1122 · Consider the two sets of molecules. Set A: [AlF6]3-, [PF6]-, [SF6] and [SiF6]2- Set B: [Ba (H2 O)6]2+, [Ca (H2 O)6]2+, [Mg (H2 O)6]2+, [Sr… · Molecular Orbital Ligand Field
ABC26IN1190 · In the 31 P { 1 H} NMR spectrum of a diamagnetic complex mer- [M (PR3)3 Cl3](M= transitionmetal, I=0) expected number of resonance(s) is · Magnetic Measurements
ABC26IN1192 · Consider the following statements for [FeO4]2- (A) It is stable in the pH range 0-14 (B) It is stable in strongly basic medium only (C) It… · Mossbauer
ABC26IN1223 · Consider following statements for Eu3+ (A) The positions of sharp bands in UV-vis spectra of its complexes depend heavily on the ligand… · Lanthanides & Actinides – General
ABC26IN1304 · The reaction of decaborane B10 H14, with acetylene in the presence of Et2 S gives · Main Group Elements – General
ABC26IN1305 · In compound N3 P3 F6, the geometry around nitrogen and phosphorus, respectively, are · Main Group Elements – General
ABC26IN1475 · The correct order of acceptor ability of the phosphorus ligands is · Organometallic Compounds – General
ABC26IN1476 · Identify the correct statement(s) for H3B.CO (A) sp2 hybridized orbital of B accepts the lone pair of CO. (B) Its vCO value is more than… · Cluster Compounds Wade Rules
ABC26IN1478 · Match the following complexes with their vCO stretching frequency The correct match is · Organometallic Compounds – General
ABC26IN1479 · The VCN in [Fe(CN)6]3-(A) and [Fe(CN)6]4-(B) and VCO in [Cr(CO)3 (NH3)3](C) and [Cr(CO)6](D) are compared below. The pair with correct… · Organometallic Compounds – General
ABC26IN1480 · The cluster type and geometry of the species [Rh9 P(CO)21]2- are · Cluster Compounds Wade Rules
ABC26IN1482 · The hydrocarbon having an analogous structure to that of P4 O6 is · Organometallic Compounds – General
ABC26OR1053 · Following reaction is an example of · Sigmatropic Shifts
ABC26PH0872 · Root mean square speed of the molecules of a perfect gas is proportional to · Atomic And Molecular Term Symbols – General
ABC26PH0873 · Entropy of a perfect gas is · Atomic And Molecular Term Symbols – General
ABC26PH1193 · The dispersity of a polymeric sample is · Polymer Chemistry – General
ABC26PH1358 · In a cubic crystal, the (111) and (222) reflections are observed, but not the (001) reflection. The Bravais lattice is · Crystal Systems Lattices
ABC26PH1359 · A metal crystallizes with cubic close-packed structure. The sin 2 theta values of Bragg reflections of Miller Planes (200) and (111) are… · Crystal Systems Lattices
ABC26PH1402 · The free energy [A-A(0)] of a system with 10 non interacting spins (S=I) is · Statistical Thermodynamics – General
ABC26PH1403 · The translational partition function for Ar confined to a volume of 1 L at 300 K, having thermal wavelength of 1.60 × 1011 m, is closest to… · Partition Functions
ABC26PH1507 · For a closed system in the absence of non-PV work, the correct statement is · Thermodynamics – General
ABC26PH1508 · The volume change in a certain phase transition is 2.0 mL mol-1 at the transition point. From this, we may conclude that the transition is… · Thermodynamics – General